Over 1 million tech questions and answers.

BSOD portcls.sys

Q: BSOD portcls.sys

I noticed when everytime I opened skype, it BSODs and says portcls.sys. These minidumps are from the driver verifier so hopefully the BSOD was triggered by the driver verifer. From what I read, it may be the sound driver or something but I'm not sure where to go about with it. Thanks

Preferred Solution: BSOD portcls.sys

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)

A: BSOD portcls.sys

BSODs were caused by the Virtual Audio Cable driver which is part of a program, 'Ventrilo'
Update/Remove it. Ventrilo - Download

* *
* Bugcheck Analysis *
* *

Use !analyze -v to get detailed debugging information.

BugCheck D6, {fffff9800ac6f018, 0, fffff8800435fb15, 0}

*** WARNING: Unable to verify timestamp for vrtaucbl.sys
*** ERROR: Module load completed but symbols could not be loaded for vrtaucbl.sys

Could not read faulting driver name
Probably caused by : portcls.sys ( portcls!GetMaxMapRegisters+5 )
N bytes of memory was allocated and more than N bytes are being referenced.
This cannot be protected by try-except.
When possible, the guilty driver's name (Unicode string) is printed on
the bugcheck screen and saved in KiBugCheckDriver.
Arg1: fffff9800ac6f018, memory referenced
Arg2: 0000000000000000, value 0 = read operation, 1 = write operation
Arg3: fffff8800435fb15, if non-zero, the address which referenced memory.
Arg4: 0000000000000000, (reserved)

Debugging Details:
Could not read faulting driver name

READ_ADDRESS: GetPointerFromAddress: unable to read from fffff80002d14100

fffff880`0435fb15 8b4150 mov eax,dword ptr [rcx+50h]





PROCESS_NAME: audiodg.exe


TRAP_FRAME: fffff88008b45110 -- (.trap 0xfffff88008b45110)
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=0000000000000000 rbx=0000000000000000 rcx=fffff9800ac6efc8
rdx=0000000000000001 rsi=0000000000000000 rdi=0000000000000000
rip=fffff8800435fb15 rsp=fffff88008b452a8 rbp=fffffa800aa32f00
r8=0000000000000000 r9=0000000000000000 r10=fffff80002f95440
r11=fffff88008b45170 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0 nv up ei ng nz na pe nc
fffff880`0435fb15 8b4150 mov eax,dword ptr [rcx+50h] ds:fffe:fffff980`0ac6f018=????????
Resetting default scope

LAST_CONTROL_TRANSFER: from fffff80002a8f25c to fffff80002ae2d40

fffff880`08b44fa8 fffff800`02a8f25c : 00000000`00000050 fffff980`0ac6f018 00000000`00000000 fffff880`08b45110 : nt!KeBugCheckEx
fffff880`08b44fb0 fffff800`02ae0e6e : 00000000`00000000 fffff980`0ac6f018 00000000`00000000 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x456cf
fffff880`08b45110 fffff880`0435fb15 : fffff880`0438c9ad fffffa80`0aa32ef0 fffffa80`0a1b9f98 fffffa80`099f3b60 : nt!KiPageFault+0x16e
fffff880`08b452a8 fffff880`0438c9ad : fffffa80`0aa32ef0 fffffa80`0a1b9f98 fffffa80`099f3b60 fffff880`04376110 : portcls!GetMaxMapRegisters+0x5
fffff880`08b452b0 fffff880`0438c1fe : 00000000`00000000 00000000`00000000 00000000`00000000 fffffa80`0abbc260 : portcls!CPortPinWavePci::Init+0x351
fffff880`08b45340 fffff880`0437b0ee : fffffa80`0a1b9f50 00000000`00000000 fffffa80`093461b0 00000000`000007ff : portcls!CPortFilterWavePci::NewIrpTarget+0x1a6
fffff880`08b453c0 fffff880`04381e23 : fffff980`1a58cd30 fffffa80`0982d560 00000000`00000000 00000000`00000018 : portcls!xDispatchCreate+0xfa
fffff880`08b45440 fffff880`043dbeea : fffff980`1a58cd30 fffffa80`0982d560 00000000`00000000 fffff880`00000000 : portcls!KsoDispatchCreateWithGenericFactory+0x2b
fffff880`08b45470 fffff880`043d67a6 : fffff980`1a58cd30 fffffa80`09346000 fffffa80`09346060 00000000`00000000 : ks!DispatchCreate+0x11e
fffff880`08b454c0 fffff880`0437a897 : fffff980`1a58cd30 fffffa80`09346060 00000000`00000000 00000000`00000002 : ks!KsDispatchIrp+0xc6
fffff880`08b454f0 fffff880`0437a064 : 00000000`c000000d 00000000`00000002 fffffa80`09346060 fffff800`02f86c42 : portcls!DispatchCreate+0x67
fffff880`08b45520 fffff880`043518c2 : fffff980`1a58cd30 00000000`00000002 fffffa80`09346060 fffffa80`09774590 : portcls!PcDispatchIrp+0x54
fffff880`08b45550 fffff980`1a58cd30 : 00000000`00000002 fffffa80`09346060 fffffa80`09774590 fffffa80`09346060 : vrtaucbl+0x38c2
fffff880`08b45558 00000000`00000002 : fffffa80`09346060 fffffa80`09774590 fffffa80`09346060 fffff800`02f87c16 : 0xfffff980`1a58cd30
fffff880`08b45560 fffffa80`09346060 : fffffa80`09774590 fffffa80`09346060 fffff800`02f87c16 fffff980`1a58cd30 : 0x2
fffff880`08b45568 fffffa80`09774590 : fffffa80`09346060 fffff800`02f87c16 fffff980`1a58cd30 00000000`00000002 : 0xfffffa80`09346060
fffff880`08b45570 fffffa80`09346060 : fffff800`02f87c16 fffff980`1a58cd30 00000000`00000002 fffff980`1a58cd30 : 0xfffffa80`09774590
fffff880`08b45578 fffff800`02f87c16 : fffff980`1a58cd30 00000000`00000002 fffff980`1a58cd30 fffffa80`09774590 : 0xfffffa80`09346060
fffff880`08b45580 fffff800`02f86c42 : fffff980`1a58cf20 00000000`00000002 fffffa80`0982e8a0 fffffa80`09774590 : nt!IovCallDriver+0x566
fffff880`08b455e0 fffff800`02f87c16 : fffff980`1a58cd30 00000000`00000002 fffffa80`0982e750 00000000`00000000 : nt!ViFilterDispatchGeneric+0x62
fffff880`08b45610 fffff880`02ce7825 : fffff980`1a58cf68 fffff980`1a58cfb0 fffffa80`09837690 fffffa80`0aed2290 : nt!IovCallDriver+0x566
fffff880`08b45670 fffff800`02f87c16 : fffff980`1a58cd30 00000000`00000002 00000000`00000000 fffffa80`09837b80 : ksthunk!CKernelFilterDevice::DispatchIrp+0x11d
fffff880`08b456d0 fffff800`02ddfcd5 : 00000000`00000004 fffffa80`0aad07c8 fffffa80`092e7900 fffffa80`0ab93f40 : nt!IovCallDriver+0x566
fffff880`08b45730 fffff800`02ddc302 : fffffa80`09837b80 fffffa80`00000000 fffffa80`0aad0610 fffffa80`00000001 : nt!IopParseDevice+0x5a5
fffff880`08b458c0 fffff800`02ddd796 : 00000000`00000580 fffffa80`0aad0610 fffff880`08b45ca0 fffffa80`076679f0 : nt!ObpLookupObjectName+0x312
fffff880`08b459b0 fffff800`02ddf09c : 00000000`0000041c 00000000`00000000 fffffa80`00000a01 fffffa80`0a8370e0 : nt!ObOpenObjectByName+0x306
fffff880`08b45a80 fffff800`02de9ce4 : 00000000`0238d6e8 fffff8a0`c0000000 00000000`0238d5e0 00000000`0238d5d0 : nt!IopCreateFile+0x2bc
fffff880`08b45b20 fffff800`02ae1fd3 : fffffa80`0a44bb30 00000000`00000001 fffffa80`0ada32e0 fffff800`02dd9234 : nt!NtCreateFile+0x78
fffff880`08b45bb0 00000000`76d2186a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`0238d558 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x76d2186a

fffff880`0435fb15 8b4150 mov eax,dword ptr [rcx+50h]


SYMBOL_NAME: portcls!GetMaxMapRegisters+5


MODULE_NAME: portcls

IMAGE_NAME: portcls.sys


FAILURE_BUCKET_ID: X64_0xD6_VRF_portcls!GetMaxMapRegisters+5

BUCKET_ID: X64_0xD6_VRF_portcls!GetMaxMapRegisters+5

Followup: MachineOwner

Read other 3 answers

Hello i've been getting portcls.sys bsod's in intervals of about 25 mins or something like that well mostly like that sometimes even 2 hours or more but lats 3 bsod's were in 20 min interval

I've attached my dump file
Please help me as soon as possible
Sorry for my bad English
If you need more info just tell me

A:portcls.sys Bsod

Read other 8 answers

My system has been experiencing the blue screen of death for quite some time. However, it has been occurring much more frequently these past few weeks. Generally, it occurs when I am surfing the web and have multiple tabs open. I generally use Firefox, however, it has also occurred with Internet explorer. Also, it occurred one time right when I plugged in my usb printer, a dell 1110 laser printer. Twice, after I have rebooted my computer from the BSOD, it went right back into the BSOD immediately. However, it has never reverted to the BSOD at start up twice in a row. The information I took from one of the BSOD's is as follows:


STOP. 0x000000D1 (0X00000000, 0x00000002, 0x00000008, 0x00000000).

Sometimes it references "portcls.sys" and other times the BSOD doesn't.

Please help.


A:BSOD portcls.sys sometimes

Read other 6 answers

Just got a gift from a friend. A Panasonic CF48E. Put a new HD in it, Installed WIN XP pro, and was happy... NO sound.. Looking at the Control panell, looks like the Multimedia Audio Controller has a ( ! ) in the yellow circle. Downloaded what seems to be the correct drivers for it, ir starts to install but mid installation I get the Blue SOD, that says portcls.sys, and it shuts down, and restarts the laptop real fast ( no time to read what the blue screen says..
Anyone see that problem before?
Any solutions? I read all kinds of suggestions, but none work.
Help please.

A:Panasonic CF-48 E Portcls.sys BSOD

Try here:

Read other 1 answers

Hello readers, Lately i have been getting these blue screen errors and slow downs that may be related to my audio driver, they say:

A problem has been detected and windows has been shut down to prevent damage to your computer.


If this is the first time seeing this error restart computer. IF it appears again follow steps:
Check to make sure any new hardware...etc.

If problem continues disable or remove any new hardware or software. Disable Bios memory options such as charging or shadowing

Technical information:

STOP: 0x000000D1 (0x585A08EB,0x00000002, 0x00000000, 0xAF78E6FE)
Portcls.sys- address AF78E6FE base at AF78D006, Date Stamp 40574e49
Beginning dump of physical memory, Physical memory dump complete.

the BSOD has happened about 7 times now and happens randomly and I find that when i click Scan my PC for problems on the dell technical support page the blue screen shows up everytime. I downloaded and intalled driver Audio: SIGMATEL STAC 92XX C-Major HD Audio, Driver, Windows 2000, Windows XP, Windows XP x64, Multi Language, Multi System, v., A06 from dell technical support. My Audio is now making popping/static noise anytime a sound plays even startup sound.. I have scanned my computer with Trenmicro PC-Cillin 12 and AVG and no virus and have scanned for spyware no spyware. My slowdon is constant, before this problem windows used to boot real fast say 45 sec but now it takes real long to boot into windows 3 minutes. My CPU us... Read more

A:Windows XP BSOD(portcls.sys)

The Portcls.sys is certainly related to the sound card driver.

In some instances faulty RAM can invoke such BSOD's as well, but it does sound like the error is a by-product of another deeper problem, as the PC is taking a long time to start up.

Which process is using the high PCU % under task manager?

Read other 2 answers

So... after i installed Win8 this has happened to me....
It has also happened when someone answeres MY call to them.

I've tried to understand the crashdumps myself but im not so good with this...

The weird thing is that it doesn't happen EVERY call... but just sometimes... when my comp. has been running for a while...

Hope i've included all the nessesary information.
Let me know if something is missing.
And thanks for taking your time to help me!

A:BSOD portcls.sys when answering skypecalls

I've tried looking at the .dmp again... WIN8_DRIVER_FAULT makes me think there is some problem within windows 8 but i can't understand where i should look?

Read other 2 answers

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.
Locale ID: 1033

Additional information about the problem:
BCCode: 50
BCP1: FFFFFA800E990008
BCP2: 0000000000000000
BCP3: FFFFF88006802B15
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:
From the actual BSOD, this is the information I've gathered: paged_area_in_nonpaged_area and something called portcls.sys

I've googled both errors and the one thing that makes somewhat of sense is that portcls.sys has something to do with audio devices. When I do get a BSOD, about half the time, it's right as I've opened something that has sound, like a media file or a Youtube video, etc.

edit: forgot to include my specs.
GTX 770
Realtek Audio drivers 6.0
Win7x64 Pro

A:BSOD once or twice a week - portcls.sys + paged_area_in_nonpaged_area

Blue Screen of Death (BSOD) Posting Instructions

Read other 1 answers

Seriously need help with BSOD.
Started 13 Oct 2013 and happens at least once each day.
Same errors every time. portcls.sys is mentioned every time. A new version of this was installed about that time when a Windows monthly update happened.
I found an older version and installed it but BSOD continued to happen. This seems to be an audio driver.

Here is a screen report:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.
Locale ID: 1033

Additional information about the problem:
BCCode: d1
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF88005345770
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:

I have downloaded the suggested SF Diagnostics Tool.exe and ran it. I'll try to include the zipped folder here for you to examine.

Please let me know what else I need to supply to you.


John B.

A:BSOD D1 possibly portcls.sys related

Welcome to the Forum.

Norton is a known cause of BSOD's. Please remove it for testing purpose. Use Microsoft Security Essentials.

Recommended from a strict BSOD perspective, compatibility & stability compared to other security software:

Microsoft Security Essentials - Free Antivirus for Windows

Malwarebytes - Free

Good and Free system security combination.

Reduce items at start-up: Startup Programs - Change

Perform a clean boot: Troubleshoot Application Conflicts by Performing a Clean Startup

Please update these older drivers. Links are included to assist in looking up the source of the drivers. If unable to find an update, please remove (un-install) the program responsible for that driver. DO NOT manually delete/rename the driver as it may make the system unbootable!:-

Afc.sys Wed Jul 12 11:48:20 2006 (44B48D24)
Arcsoft(R) ASPI Shell (CD/DVD program)
Driver Reference Table - Afc.sys

pcouffin.sys Tue Dec 5 20:39:30 2006 (457584A2)
low level access layer for CD devices (A part of many different CD/DVD burning programs)
Driver Reference Table - pcouffin.sys

cmudax3.sys Wed Sep 3 16:13:16 2008 (48BE633C)
C-Media Audio Driver (WDM) by C-Media
Driver Reference Table - cmudax3.sys

AtiPcie.sys Tue May 5 21:00:22 2009 (4A005486)
ATI PCIE Driver for ATI PCIE chipset or [br] ATI PCI Express (3GIO) Filter[br]Found in my ATI video drivers (I have an Intel chipset)
Driver Reference Table - AtiPcie.sys

ASACPI.sys Thu Jul 16 09... Read more

Read other 3 answers

New MSI GE62 with fresh install of 8.1 Pro. All drivers are the latest. Have reinstalled Video and Audio drivers. BlueScreenView says Filename: ntoskrnlexe | Address: ntoskrnlexe+152f36
portcls.sys | portcls.sys+304cc

Bug check code: 0x0000009f | Caused by driver: portcls.sys | Caused by address: portcls.sys+304cc

I did google portcls.sys and all info pointed to an audio driver. BSOD happens only when it's asleep. Any help would be appreciated .

Read other answers

[apologies in advance for length of post]
My system as it stands now: Athlon64 754 3000+/AsusK8VSE Del/1Gig Geil DDR/Geforce 6800GT256MB/Soundblaster Audigy/Antec NeoHE 430/Fusion HDTV card/Seagate 120GigIDE/Western Digital 250Gig SATA/LG 4120B 12x DVD-RW DL

for 6months + now I've been getting BSOD errors at random times. At first this was mainly occuring with 3D games (Oblivion, HL2 etc) and nv4_disp.sys etc and sometimes portcls.sys, but then it started happening more often and usually D1 with portcls.sys. (was using onboard sound at time) A few times while I was in the desktop (no 3D/graphics intense stuff going)

tried all the usual suspects. Extensive memory test (memtest 86 no errors after hours), driver cleaning + reinstalling, reinstall software, virus/spyware check, background tasks off, overheating [Did actually clean out my GFX card heatsink which had clogged up] - eventually complete reinstall of WinXP with the latest drivers. WindowsXP was on the IDE drive.

Did extensive reading and research about portcls.sys errors and found that it could be a problem with my onboard sound. Disabled onboard sound completely (no Audigy at this point) and still got a couple nv4_disp and I think win32 bluescreens.

Decided to make brand new partition on my SATA drive and do completely fresh install of WinXP on this drive. Unfortunately same errors still occuring. I buy an Audigy sound card to see if thats the issue - I've come across a few posts about portcls/onboard s... Read more

A:At Wits End BSOD p17.sys/portcls.sys WinXP

I had a similar problem with a PC here at work. I disabled all onboard crap ( serial, printer port, ect) through the bios. This helped but still kept getting the old IRQ error. I did the tried and true method of tearing it all down and putting in one piece at a time...the problem wound up to be a failing mem chip. It was still working but not all the time. Once i replaced it...woo hoo its all better.

Read other 2 answers

BSOD appears only while playing ut2004. BF3 etc works fine.
Appeared after graphic card change Ati 4870 --> GTX 560 Ti

Everything at stock clocks.
The most of components are half year old.
OS installed 08.19.2011

System specs:
AMD Phenom II X4 955
Asus M4A87TD/USB3
2x4gb Kingston HyperX 1600mhz DDR3
NVIDIA Geforce GTX 560 Ti
Creative Soundblaster X-Fi titanium
Samsung F1 750gb, own 60gb part for OS.
Windows 7 Ultimate x64 retail

A:BSOD - while playing ut2004 (portcls.sys)

Loading Dump File [F:\BSODDmpFiles\valtsu\Windows_NT6_BSOD_jcgriff2\021212-16863-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*C:\SymCache*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Kernel Version 7601 (Service Pack 1) MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.17640.amd64fre.win7sp1_gdr.110622-1506
Machine Name:
Kernel base = 0xfffff800`03259000 PsLoadedModuleList = 0xfffff800`0349e670
Debug session time: Sun Feb 12 06:36:24.716 2012 (GMT-7)
System Uptime: 0 days 0:36:56.308
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
* *
* Bugcheck Analysis *
* *

Use !analyze -v to get detailed debugging information.

BugCheck 3B, {c0000005, fffff88003f8cbf9, fffff8800379bd00, 0}

Probably caused by : portcls.sys ( portcls!CPortPinWaveRT::PowerNotify+1829 )

Followup: MachineOwner
---... Read more

Read other 9 answers

WinXP Frequent BSoD due to....

basically i've been recently getting a lot of Blue Screens some of them just says "BAD_POOL_HEADER" and then there's others that say NON_PAGED_..........." and it's in result of "ati2cqag.dll, ati2dvag.dll, ati3duag.dll portcls.sys i've so far updated my Video Card driver(Radeon 9600 256mb) also my intergrated sound card. also updated the nVidia stuff that came with the mother board like the network Card. so i'm reall ynot sure whtas happening.. i've got a bunch of mini dump files, not even sure which is which anymore... since it just keeps crashing. also this is kinda weird when i'm wathcing anime and stuff on RealOne Player, it sometimes jsut fast fowards automatically so ~____~ i'll attach the minidumps. D: help if anyone can it's getting to be really bothersome having my computer die on me when i'm doing research for school or just chatting in Ragnarok Online. oh, also i just reformatted.. last ... friday so yea dunno if that afects anything :dead:

A:lots of BSoD caused by ati2cqag.dll and other ati DLL's also portcls.

Same issue... HELP, PLEASE!

I, too, have had many many many random reboots or BSOD and they are driving me crazy. A lot of them list the same issues/errors as the post above. I've lost a great deal of man-hours, as well as blank cd's & DVD's. I've read through the forum and have noticed cpc2004 can read through/process dumps so I have attached some. Any help would be appreciated!


P4 3.4GHz (watercooled)
Gigabyte 8KNXP 1.0 with latest BIOS
AIW Radeon 9800
SB Audigy2
2x 250GB hd's
1x 74GB raptor boot drive
Plextor PX-716A DVD-RW
Kenwook True-x drive
Enermax 550W Powersupply

Read other 1 answers

was using virtual audio cable to send audio from media player classic to VSTHOST.
it worked but VSTHOST doesnt let me apply a stereo vst plugin to the front speakers, the rear speakers, the center and subwoofer independantly.

i found a program that does, it is called live professor.

well it isnt finalized yet and still in beta stage (although the website said the software was used in places where there would be a public listening, i thought that was worth something)

ever since i first tried using live professor i couldnt get any audio to the plugin.
the first time was my mistake, because i routed all the inputs and outputs for the plugins.. but i forgot to connect each plugin to eachother.
after i did get the plugins connected to eachother, i couldnt get the audio to stop skipping.

i had to use asio4all to get audio into live professor because the only thing it accepts is asio.
(i also learned VSTHOST would not work with the regular creative asio drivers, but would work with the asio4all drivers)
well i cranked up the buffer in asio4all all the way to 2048 samples and it still wouldnt stop the audio from skipping.
keep in mind i run foobar with asio drivers all the way down to 2ms latency with four instances of impulse response convolvers and three time delays totalling seven vst plugins at 2ms.

well i posted on the live professor forum and somebody said maybe it was my computer specs and i was asked what they were.
i went back into VSTHOST to gather up some compa... Read more

A:portcls BSOD with three audio programs open

There is no dump file in the attachment so unfortunately we cant tell you anything without that

Read other 2 answers

Intermittant BSOD on shutdown with auto-restart. BlueScreenView seems to flag ntoskrnl.exe & portcls.sys. I am uncertain how to deal with this.

A:Intermitant BSOD on shutdown w autorestart. ntoskrnl.exe? portcls.sys?

Quote: Originally Posted by slowrobert

Intermittant BSOD on shutdown with auto-restart. BlueScreenView seems to flag ntoskrnl.exe & portcls.sys. I am uncertain how to deal with this.

Hello slowrobert.

Your crash dumps are not showing any finite probable cause. In such a situation, it is better to enable Driver Verifier to monitor the drivers.
Driver Verifier - Enable and Disable
Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.

Why Driver Verifier:
It puts a stress on the drivers, ans so it makes the unstable drivers crash. Hopefully the driver that crashes is recorded in the memory dump.

How Can we know that DV is enabled:
It will make the system bit of slow, laggy.

Before enabling DV, make it sure that you have earlier System restore points made in your computer. You can check it easily by using CCleaner looking at Tools > System Restore.

If there is no points, make a System Restore Point manually before enabling DV.


If you fail to get on the Desktop because of DV, Boot into Advanced Boot Options > Safe mode. Disable DV there. Now boot normally again, and try following the instruction of enabling DV again.
If you cannot boot in Safe mode too, do a System Restore to a point you made earlier.

Test your RAM modules for possible errors.
How to Test and Diagnose RAM... Read more

Read other 9 answers

So here is the issue, ever since I built my computer I have had nothing but trouble with the Chinese crap sound card, also known as VIA. I have re-installed drivers countless times and ran countless diagnostic tools and other thing to no avail. Every time I open Volume Manager I get a portcls.sys BSOD. This is making it so I can't use my microphone on Skype, even though I set my microphone as default. Headset usually works after opening the audiodeck in VIA and resetting my headset. Is there any way to remedy this BSOD?

Z77 Gigabyte motherboard
Intel 3570k CPU
8 GB Corsair Vengeance
VIA HD Audio

A:BSOD when opening Volume Manager - portcls.sys error

Hello and welcome simple answer theman get yourself a new card mate I use Asus Xonar DG's in all my machines and never have had so much as sniff of problems.

Maybe this Chinese brand card has got software that is incompatible with your system or it is loaded with whatever.

http://www.asus.com/Sound_Cards_and_DigitaltoAnalog_Converters/Xonar_DG/ this is the base version and I find more than capable of driving my 5:1 system and if necessary a 7:1 system and for $30 a no brainer. Pity to spoil what looks to be a decent set up for a lousy sound card

Newegg.com - asus Xonar DG

Read other 5 answers


I had a Norton 360 popup that it had detected a threat and blocked it. I ran a full scan with Malware bytes, Norton, and a few things were cleaned up. Then I started getting some random BSODs. I then activated Driver Verifier, and the BSODs now occur without fail on reboot prior to he login. I am running Win7 Ult x64 with 8gb RAM. I started anaylzying the minidumps and have attached the results here. I suspected that whatever triggered the Norton alert and then got cleaned up probably had messed up something. I ran SFC /scannow but it checked out OK. I ran memtest86 for 12 hours and it found 1 error bit on one slot that it indicated was ECC correctable. I swap SDRAM strips around (and in and out) anyways, but BSOD was always the same at reboot! Runs fine in Safe Mode(s). I did chkdsk /R c: - all OK. I updated all drivers on my Gigabyte P55-UD4P (latest bios). I disabled the onboard Intel HD audio, still BSOD. I ran Avast boottime full scan and it found some things and cleaned but still the same BSOD at bootup. Could be hardware, but I kind of doubt it. I also reset all BIOS setting to factory defaults. I did not try to reseat/swap the CMOS battery. I did remove all USB and audio cable attachments. I also ran Startup Repair and it found no problems.

The WinDbg results attached are labelled by the minidump dates. The ones on 09/18 are BEFORE Driver Verifier was turned up on ALL drivers. The two from 09/22 are with Driver Verifier which pointed me... Read more

A:Repeated BSOD on reboot (before login) 0xD6 portcls.sys (audiodg.exe)

I forgot to upload my attachments before submitting the first time. Oops.

Read other 3 answers

Hello to all, this is my first post on sevenfourms so please excuse me if I do not follow every guideline of this forum, I'm still going through all the stickyd posts. I've been having an issue with my computer bsoding while torrenting and attempting to install some programs. I'll get an error warning sometimes stating the hard drive cannot be written to, would I like to retry, ignore, or abort and after that it will BSOD. Attached is my DM Log zip. I appreciate any and all help with these issues. One other problem I'm having is that my computer will not stay in sleep/hibernate mode, it will go into the mode then turn right back on. I'm assuming it may have something to do with my motherboard c-states but I'm not sure exactly what to do to get it functioning properly.

A:BSOD Portcls.sys & Neito.sys General issue resolution/cleanup

How did you activate your copy of windows?

Read other 1 answers

i have getting a blue screen error which refers to a 0xd1 stop error .
this bsod is related to portcls.sys.
i am using xp sp2.
can i get any Microsoft's hot fix for this error?
is updating to sp3 may fix this problem?

A:Hotfix for portcls.sys

You should likely install SP3 anyway.

Aside from that, that file is audio related. Download and install the latest audio drivers for your motherboard/soundcard.

Read other 1 answers

I have been receiving BSOD's for a few months. The only happen when I am playing the Windows XP Pro version of Spider Solitaire. The guilty party checks out always to be: IMAGE_NAME: portcls.sys. I have tried Microsofts patches and verified every single driver to be up to date - as well as having everything else squeaky clean as far as spyware and antiviruses are concerned. What information do I need to provide, i.e., minidump analysis, etc., attached, for someone to advise me how to proceed. I am hoping it might be as simple as downloading a portcls.sys file and replacing the one currently installed.

Read other answers

got a damn problem on my laptop HP
Processor: 2.66ghz
Everytime I start a video game and winamp...

the computer shows BSOD:

I think its physical but not sure.... is there anythin I could do to remove that BSOD plz.....

I gonna try tonite updatin my video card but its already the latest drivers

Ill try to turn up my voltage memory a bit.... it might work ... hopefully!!!
Anyway thx


Read other 7 answers

I have been receiving BSOD's for a few months. The only happen when I am playing the Windows XP Pro version of Spider Solitaire. The guilty party checks out always to be: IMAGE_NAME: portcls.sys. I have tried Microsofts patches and verified every single driver to be up to date - as well as having everything else squeaky clean as far as spyware and antiviruses are concerned. What information do I need to provide, i.e., minidump analysis, etc., included below, for someone to advise me how to proceed. I am hoping it might be as simple as downloading a portcls.sys file and replacing the one currently installed.
Microsoft (R) Windows Debugger Version 6.8.0004.0 X86
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\WINDOWS\Minidump\Mini012308-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: http://msdl.Microsoft.Com/download/symbols
Executable search path is:
Windows XP Kernel Version 2600 (Service Pack 2) MP (2 procs) Free x86 compatible
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 2600.xpsp_sp2_gdr.070227-2254
Kernel base = 0x804d7000 PsLoadedModuleList = 0x8055c700
Debug session time: Wed Jan 23 10:54:13.781 2008 (GMT-8)
System Uptime: 5 days 14:54:00.765
Loading Kernel Symbols
Load... Read more

Read other answers

Recently I been having multiple Bsods on a daily basis they can occur whenever but most of the time they occur wehn using online applications.
Example of when portcls.sys Bsods occur:
On skype calls
When creating a party on Neverwinter beta
When trying to play Arma 3 alpha online
Speratically on Legue of legends

Kernal Bsods occur Multiple tmes a day without addtionla applications being launched, please see attached .dmp files.
Any help would be appreciated
Thanks, Zantier

A:Portcls.sys and Kernal mode Bsods

BugCheck D6, {fffff98006551018, 0, fffff88004c73b15, 0}

*** WARNING: Unable to verify timestamp for vrtaucbl.sys
*** ERROR: Module load completed but symbols could not be loaded for vrtaucbl.sys

Could not read faulting driver name
Probably caused by : portcls.sys ( portcls!GetMaxMapRegisters+5 )

Usual causes: Device driver
This is an interesting bugcheck, since I have never analyzed one with this particular stop code, although it appears that a driver has referenced address space outside of it's current pool allocation. It appears that a Windows Port class driver (driver for port devices) was reading the referenced memory address (if I'm right).

Anyhow, the guilty driver is most likely, the Virtual Audio Cable driver, I would suggest finding an update from their support page, which can be found here:Ventrilo - Download
If that doesn't make a difference, then please remove the associated program with Revo Uninstaller Pro - Uninstall Software, Remove Programs easily, Forced Uninstall, Leftovers Uninstaller

6: kd> lmvm vrtaucbl
start end module name
fffff880`04c62000 fffff880`04c70a00 vrtaucbl T (no symbols)
Loaded symbol image file: vrtaucbl.sys
Image path: \SystemRoot\system32\DRIVERS\vrtaucbl.sys
Image name: vrtaucbl.sys
Timestamp: Mon Feb 15 17:07:10 2010 (4B797F3E)
CheckSum: 0001BBDF
ImageSize: 0000EA00
Translations: 0000.... Read more

Read other 1 answers

I've received this multiple times now, and in some cases I suspect it's caused reboots when I've been away from my PC. A bit of a head scratcher for me as this error was associated with an old Windows update, however that old issue has long since been fixed by MS.

I'm sitting on updating to Windows 10 anyways but thought I would post here because I'm always curious and like to know what's going on. Thanks in advance for the assistance.


A:System Service Exception PORTCLS.SYS

Some drivers are out to date.
Maybe CPU overclocked, could cause bluescreens.

I'll post details when I'm home.

Read other 3 answers

Hey I am new here so I will try and keep this as concise as possible!

I get the BSOD seen in the title on this PC at random intervals but usually once or twice per fortnight. This might be while gaming, web browsing or doing anything normal.

I followed this thread for analysing 2 dump files I have retained (I believe these are full memory dumps). I found that nvlddmkm might be causing the issue, however I wasn't totally convinced it was the nvidia drivers at fault as this was a fresh Win 10 install about a month or two ago.

I have followed the BSOD posting instructions to generate the zip with the logs etc in it however the tool doesn't seem to like making the zip when it includes the 2 large dump files I checked above as the zip ends up being empty? I can only run it successfully if I just leave in the smaller dumps from C:\windows\minidump. I will attach the one it can make and can attach another zip with the 2 larger dumps in if needed? This extra zip would be over 400MB so not sure if that would be allowed or even needed!

Thanks in advance.

A:Page fault in non paged area (portcls.sys)

If you uninstall Virtual Audio Cable by EuMus Design, what happens? Check it and let us know.

Not suggesting for an update because I am not seeing a driver for it that is compatible with Windows 10.

BugCheck 50, {ffffe0006a15c008, 0, fffff801a0c080bd, 0}

*** WARNING: Unable to verify timestamp for vrtaucbl.sys
*** ERROR: Module load completed but symbols could not be loaded for vrtaucbl.sys

Could not read faulting driver name
Probably caused by : portcls.sys ( portcls!GetMaxMapRegisters+5 )

Followup: MachineOwner

Image name: vrtaucbl.sys
Timestamp: Sun Apr 01 14:38:53 2012 (4F781B25)

Read other 3 answers

I can't seem to figure out why my dell dimension3000 has no sound...

In my device manager it shows a yellow question mark next to the multimedia audio controller. And upon startup windows sees that it recognizes the Realtek Audio A97 device and tries to install drivers.. At the end of the installation the computer goes to the Blue Screen of DEATH and says portcls.sys error. Must reboot, etc and the computer does not load driver. I've tried updating ALL Dell drivers for this computer, Ive tried handfuls of different drivers all of which do the same exact thing! The sound card is connected to the computer's motherboard as far as i know in these machines...

Do i need to just install a new separate card? Please help, i've tried everything!

Here is a list of the computer BIOS.

BIOS Date: 01/05/06
BIOS Type: Phoenix ROM BIOS PLUS Version 1.10 A03
BIOS ID: Dell 0N6381 BIOS Version: A03
OEM Sign-On: None
Chipset: Intel 2570 rev 2
Superio: Unknown
CPU: Pentium 4 2400 Mhz MAX: 3600 Mhz
BIOS ROM In Socket: No
BIOS ROM Size: 512K
Memory Installed: 512 MB
Memory Maximum: 4096 MB
Memory Slot 01: 256 MB
Memory Slot 02: 256 MB
ACPI Revision: 1.0

A:Multimedia Audio Controller error and the portcls.sys BSODeath

If all else fails a new card may the best if not simplest solution (btw.. i've seen some very cheap usb sound cards if you just want basic sound. try googling them)

Here's something else to try (just as a shot in dark) as i've seen anti-malware interfere with installations and cause BSODs before. (tho never for the Realtek AC97 driver but hey, is worth a try)

> Look in Add/Remove programs. Look if any Realtek sound entry there and uninstall there first then uninstall driver if found in Device Manager
> Unplug your internet connection
> Now check all your anti-malware tools (firewall, A/V, spyware check, etc) and disable any and all real time protection feature for each
> Try reinstalling Realtek

Good luck!

Read other 2 answers

blue screen error portcls.sys adress a9ba6647
it pop ups after windows xp pro comes out

Read other answers

blue screen error portcls.sys adress a9ba6647
it pop ups after windows xp pro comes out

A:blue screen error portcls.sys adress a9ba6647

you need to post the full error message
is it the same in safe mode

Read other 1 answers

PSU: Corsair 750W CMPSU-750TXEU
CPU: AMD Phenom II X4 965 BE
HDD: SAMSUNG HD502HJ SpinPoint F3 3,5" 500GB
GPU: ZOTAC Geforce GTX480 1536MB DDR5
Lettore: LG Super Multi CH10LS20
RAM: CORSAIR Dominator 2x2 GB DDR3 (CMP4GX3M2A1600C8)
Mobo: Asus M4A88T-M/USB3
OS: Windows 7 Ultimate 64bit

I've got this system running since november 2010 and i have had not a single problem. About a month ago, i had issues trying to boot windows: i had to turn power on/off loads of time until i was able to get to desktop. Since that day, Blue Screens happened every time i got to desktop, after few seconds or after few minutes... Freezes and BSoD kept coming, so i ran some tests: memtest86, scandisk, a samsung hdd test... They showed no errors but memtest.
Memtest86 found out loads of errors coming from both RAMs and so i bought new ones: Kingstone HyperX KHX1600C8D3K2. I had same problems: freeze and errors just after boot, not later (played some heavy game for more than 5 hours or so).

I tested old rams on another computer, and they worked just fine.

Oh, and i format/install Windows7 about three times.

I tried to remove GPU and tried to use MOBO GPU, but it still freezed.

Right now i have no freeze/BSoD on boot, but only while playing (after few secs).

P.S. : I had 2 BSoD using the BsoD collecting application.

P.P.S. : Some things are written in italian because i'm running an italian OS.

A:Random BSoD, BSoD while playing, BSoD on boot

Here some Blue Screen coming from Driver Verifier ...
If my Blue Screen View says the truth, they come from MagicIso... Which i have installed, like, today...

Read other 3 answers

The title says it all. Brand new i7 x980. Asus x58 premium. 12GB Mushkin enhanced redline. USB 3.0. SATA 6Gbps. Intel x-25MG2 160GB.
Multiple blue screens. Just this morning (Tuesday morning) it was 4 or 5 of them within about a 40 minute time frame. PC Pitstop driver scan had me update my NIC drivers. No help.
I'm hoping you forensic computer detectives can help figure this one out.
Minidumps are zipped up as are three WER XML files.

A:BSOD, BSOD, BSOD (minidump files zipped)

What was the error message that arrived with the BlueScreen? Was it Driver_irql_not_less_or_equal?

Read other 6 answers

hey i am on a emachine with about 1400gb of ram andbut an old video card, i think realtek 200. But there is a game called Combat Arms (mmfps) game and when i try to load a game it either gives me a blue screen or restarts my computer. This has happened before after a few updates and then im fine then im not. i dont think it the new ram i instaled( 2 ddr 3200 512gb) Its only made the game faster. Whats the problem.

A:BSOD BSOD BSOD (crawls in corner and dies)

Read other 14 answers

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.
Locale ID: 2057

Additional information about the problem:
BCCode: 116
BCP1: FFFFFA8010C69010
BCP4: 0000000000000004
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:


changed bios settings from RAID to IDE didnt seem to help this has occurred multiple times during playing planet side 2 the game runs fine then suddenly crashes im pretty sure i have the latest drivers and everything is up to date can someone clever help me please

A:BSOD Plannetside 2 (steam) black screen> reboot> BSOD crash report

A stop 0x116 is a display/graphics related issue. Many a factors or components may cause such a BSOD.

First of all, it is the display driver. From your BSOD dumps, I have noticed that it crashed the same irrespective of the driver version over time. So overlooking this part right now. Will concentrate it on later again, if needed.

Next thing is overclocking, which sometimes lead display to crash. And, you are slightly overclocked.

CPUID: "Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz"
MaxSpeed: 3400
CurrentSpeed: 3411
As the system is crashing, you should stop overclocking. Set all the hardware elements like CPU, GPU and RAM to default; and reset the BIOS to default too.
How To Clear CMOS (Reset BIOS)

Heat is another factor. Is the computer hot? Report us the heat of the computer after a couple of hours of your normal usage. Upload a screenshot of the summery tab of Speccy.

Also, dust accumulation causes heat, and dust accumulation depends on the age of the system. How old the system is? If possible, dismantle it and clean the inside carefully .... specially the air vents and fan grills, so that it can blow the hot air out easily.
Dont forget to apply thermal paste to the CPU when re-seating the system.

Insufficient power supply is also a great cause of display crash. Check if the CPU is supplying adequate power there or not.
eXtreme Power Supply Calculator

It GPU itself may not perform upto the mark. Stress test the Graphics Card u... Read more

Read other 1 answers

Hello Guys and Gals, my Windows 7 Laptop is in a serious pickle and I have used every bit of troubleshooting knowledge I have learned in my 10 years working in a Windows environment to no result.

I hope that I am posting in the correct forum, and I have read the forum rules.This is my first post on any help forum ever, so I hope the way I have written this is in conformance with what you all are used to.

I have seen multiple error codes thrown when I forced the computer not to restart and show me the BSOD details. This is what is stated:
Stop 0x000000F4 (0x0000000000000003, 0xFFFFFA800600c910, 0xFFFFFA800600CBF0, 0xFFFFF8000357B7B0

Summary: My laptop boots to the Windows 7 login screen but after logging in, startup never finishes completely and is completely unresponsive to (Ctrl,Shift,Esc) and any other attempts to pull up the task manager. My laptop is dual boot, and has these 2 OS's installed: Windows 7 Home Premium (Genuine) and Kali Linux, both of which are 64 bit versions.
When I attempt to boot the computer into the Windows 7 environment, I am able to login at the normal account login page, but after this, it will take an entire day's time to load the desktop and even when it does, finally show the task bar, then the icons, I am unable to open any of them. For instance, after about 20 minutes, when the taskbar finally appears, when I click on the start button, whether from the keyboard windows icon, or the mouse, I will have to wait about 10 minutes until the start... Read more

A:BSOD, Win 7 desktop wont boot even in safe mode, BSOD error:0xc0000010

Quote: Originally Posted by wlocas

Stop 0x000000F4 (0x0000000000000003, 0xFFFFFA800600c910, 0xFFFFFA800600CBF0, 0xFFFFF8000357B7B0

Havent read the rest. Coz those are not relevant.

Let us know about your storage system. Namely ....
How many
Make and model (if possible)
Storage controller mode (SATA/IDE/AHCI/SCSI/RAID)
Storage controller driver
Let us know. Those information (as many of them as possible) will help us to start troubleshooting.

Read other 7 answers

Hello, so i think i have dealt with this bluescreen 3times now, and it seemed to have gone away after i went from my amd system to intel. But now its there again. The most useful function ever, wake from sleep, is now bluescreening my computer. I instantly tried to use the Disply Driver Uninstaller because thats how i solved this before, but no luck... So please, could anyone help me out? I have the dmp file too. (apparantly this support forum does not allow for dmp file uploads.... well..

Hope that works... (now i realise i could have used google drive and escaped the hassle of creating a mega account...)

Read other answers

Just did a malware scan and ended up with bsod. Please check my mini dump and advise on what to try.


A:Recent crash issues system exception bsod and Page Fault bsod

Tried loading Malware Byte and had BSOD:

On Thu 4/3/2014 2:19:27 PM GMT your computer crashed
crash dump file: C:\Windows\Minidump\040314-17440-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x75BC0)
Bugcheck code: 0x1E (0xFFFFFFFFC0000005, 0xFFFFF800030B7D79, 0x0, 0xFFFFFFFFFFFFFFFF)
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft? Windows? Operating System
company: Microsoft Corporation
description: NT Kernel & System

Read other 3 answers


So first of all, I am not a computer wizard. Some terms I might not understand as i've never had a problem like this before, but i'll try to enlist as much information as possible.

Since last friday or so, i've suddenly encountered a BSOD. Now, i've had them before and it was only once. After a reboot it usually never happend again and everything was cool. But since friday, they popped up again. Mainly during playing Battlefield 1, but i've also had it happen during Dragon Ball: Xenoverse 2.

I've had multiple BSOD errors, which are:


Now if it were one, I might've been able to pinpoint the issue, but.. They're constantly different errors that happen. Now, to explain a bit more in detail how it goes:

So i'm just playing a match of Battlefield 1. After 10/15 minutes give or take, it'll bring me to the blue screen. After processing whatever it has to process, computer shuts down and it starts to restart. At this point it will be stuck in an infinite restart loop, where my monitor will not display anything as well. It just says it's not connected to something, which it clearly is. After manually closing and rebooting, i'll have to do this a few times or mess with the HDMI a little bit before I get my monitor to pop up again. Once that happens, I get stuck in the beginning screen where you can see your HDD/SSD installed. It won't go further than that unless I ... Read more

Read other answers

Is Windows 7 Professional 64bit

Fresh install but it is getting on
Full retail version?

Acer Aspire timeline X 5280tg Approx 18 months old.
OS age approx 12 months.

I get the BUGCODE_USB_DRIVER bsod and I had a previous blue screen error before this one is in dump files.

Tried memory tester and came up ok.

Help would be much appreciated.

A:BSOD Tribes Ascend, BF3, Random BSOD BUGCODE_USB_DRIVER Acer Laptop

sptd.sys Sun Oct 11 16:55:14 2009 (4AD24632)
Remove Daemon Tools/Alcohol 120%. The driver associated with it (SPTD) causes BSOD and it caused one of yours - DuplexSecure

athrx.sys Mon Oct 05 12:33:57 2009 (4ACA1FF5)
Update your Atheros driver. It caused a crash - Drivers for Atheros AR5B93 and Windows 7

atikmpag.sys Mon Jun 13 21:23:20 2011 (4DF6B808)
Update your video card - ATI Catalyst

Problem Devices

Device PNP_Device_ID Error_Code
Teredo Tunneling Pseudo-Interface ROOT\*TEREDO\0000 This device cannot start.
Microsoft 6to4 Adapter ROOT\*6TO4MP\0000 This device cannot start.
Microsoft 6to4 Adapter #2 ROOT\*6TO4MP\0001 This device cannot start.
Microsoft ISATAP Adapter ROOT\*ISATAP\0000 This device cannot start.
Microsoft ISATAP Adapter #3 ROOT\*ISATAP\0001 This device cannot start.

Log Name: System
Source: Disk
Date: 2012-02-19T21:45:23.424
Event ID: 52
Task: N/A
Level: Warning
Opcode: N/A
Keyword: Classic
User: N/A
User Name: N/A
Computer: LAPPY
The driver has detected that device \Device\Harddisk0\DR0 has predicted that it will fail. Immediately back up your data and replace your hard disk drive. A failure may be imminent.
Run a hard drive scan on all your drives. Also, I would back up any important information just in case your hard drive does fail
Hard drive scan usings SeaTools - SeaTools for Windows | Seagate - Both lo... Read more

Read other 1 answers

I was merely resizing a Windows Explorer window on the desktop when the monitor went black for 15-20 seconds, then the mobo splash screen came up, and Windows booted back up. The "Windows shut down unexpectedly" window came up and the details said it was a BSOD. The pertinent log files from the DM Log Collector app are attached.

*edit* I built this system over 3.5 years ago and I've never reloaded or reformatted anything in that time. Maybe it's about time to reformat C: since I have all my data files on a separate drive anyway.

Read other answers

Around the 17th of March I was playing Smite, joined a match and about half way through it, I received a freeze then a BSOD. This continued to happen randomly when I would play a smite match, ranging from every 1 to 6 matches, could happen near the beginning or in the middle of the game. So I wouldn't ruin more games for others I attempted to fix the problem myself, looking up that I had to update my GPU drivers (which I do now have) or uninstall them to let my pc auto install the suitable one (This ended up with my PC or Radeon hardware detector not detecting the GPU so I had to system restore). I also tried cleaning out my PC rig with a duster to see if, my bad PC hygiene, had caused heating problems but it had no affect. I have used malware-bytes to detect malware and viruses but all that was quarantined seems to have had no affect.

I tried these solutions that I see everywhere when I search, but obviously they didn't work. So instead of finding a solution I attempted to find more symptoms, I found that within the blue screen it mentions atikmpag.sys, I see that my PC problem reports tell me that I have a lot of Windows shutting down and Video hardware errors (With the BCC codes BCC116 and BCC117 respectivly). I also attempted to see if I would gain the BSOD by testing on more strenuous games and didn't gain any BSOD whilst playing Dark Souls 2 and Batman Arkham Knight, thus so far I have concluded that this BSOD seems Smite specific, though this could do with some f... Read more

Read other answers


My computer has been unstable for quite some time and after memory tests, changing graphics cards, many driver variations and a couple of fresh OS installs a while ago it is still not stable.

The difficulty is that it doesn't seem to be triggered by anything specific so it makes debugging really difficult... sometimes it crashes twice a day then not for another week or two.

Please help me shed some light on how this could be resolved as I am considering stripping the PC down to its components, selling them and buying a pre-built system instead.


A:BSOD randomly (no specific trigger) Commonly an IRQL issue on BSOD

Welcome aboard.

* *
* Bugcheck Analysis *
* *

Use !analyze -v to get detailed debugging information.

BugCheck 109, {a3a039d89ab61a11, b3b7465eed34644b, fffffa8005567960, 8}

Probably caused by : Unknown_Image ( ANALYSIS_INCONCLUSIVE )

Followup: MachineOwner
According to carrona.org, STOP 0x00000109: CRITICAL_STRUCTURE_CORRUPTION
Usual causes: Device driver, Breakpoint set with no debugger attached, Hardware (Memory in particular)

Let us search for a faulting driver first.
Driver Verifier - Enable and Disable

Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.

Let us know the results, with the subsequent crash dumps, if any.

Read other 9 answers

Windows 7 came installed on system
system about 7 years old
AMD Phenom II X4 820 processor 2.80GHz
Nvidia Geforce 9100
motherboard: pegatron m2n7b-la
power supply: liteon 300w
HP Pavilion AY748AA-ABA p6320y

Any help is much appreciated and thanks jcgriff2 for BSOD posting instructions

A:BSOD 0x000003b ran BSOD File Collection app + perfmon (attached zip files)


All of the attached DMP files are of the SYSTEM_SERVICE_EXCEPTION (3b)bug check.

This indicates that an exception happened while executing a routine that transitions from non-privileged code to privileged code.

This error has been linked to excessive paged pool usage and may occur due to user-mode graphics drivers crossing over and passing bad data to the kernel code.

BugCheck 3B, {c0000005, fffff8000324b1a4, fffff88009790f30, 0}


1: kd> ln fffff8000324b1a4
(fffff800`0324b190) nt!MiUnmapLockedPagesInUserSpace+0x14 | (fffff800`0324b4f0) nt!KeUnInitializeUmsThread
The exception occurred in nt!MiUnmapLockedPagesInUserSpace+0x14. This is an API that maps a buffer into the dynamic address range.



-- PROCESS_NAME: nvstreamsvc.ex

Uninstall/disable nVidia Streaming Kernel service ASAP!

2. Uninstall Spyhunter ASAP from Enigma Software as it's likely causing conflicts with Malwarebytes.

3. Ensure you have the latest video card drivers. If you are already on the latest video card drivers, uninstall and install a version or a few versions behind the latest to ensure it's not a latest driver only issue. If you have already experimented with the latest video card driver and many previous versions, please give the beta driver for your card a try.

4. sptd.sys is listed and loaded in your modules list; SCSI Pass Through Direct Host - Daemon Tools (known BSOD issues with Win 7 and 8). Plea... Read more

Read other 1 answers


After doing a lot of forum surfing, I have yet to find anything that's worked to get rid of this error. My goal is to get the data off of my drive.. the problem:

I am (not) running XP Pro (not sure what sp.. 3 at one point, but I might have uninstalled it) on a dell poweredge 400sc.

Bios recognizes my hard drive, which is a SATA 400gb (No way to run as a slave with an ATA .. so I've read ..?)

I am getting a BSOD (0x00000050) when booting normally. It flashes for just a quick moment after a few seconds of the XP logo.. then computer restarts.

Computer restarts without showing a BSOD when I try to boot in safe mode.

Computer shows BSOD when plugged into the usb port using a external case. (my other *ATA* hard drive runs windows just fine on this computer) Same thing happens when plugged into a different computer.

Computer shows these errors when I try to use recovery console from my XP CD:

.. I think it's shown the 0x00000050 before.. It's been different almost every time I let the CD load today, but one time it was in OS install mode cause I thought that might help..

I can't seem to get this thing to work. Before this happened my computer was acting really slow; dragging a window around or making selection box on the desktop would make things all skippy and send the cpu to the upper 90s with nothing else running. The BSOD started when I tried to run the SATA as a slave to my ATA.

Am I going to have to send my drive in ... Read more

A:BSOD Stop:0x00000050 Page_Fault_In_Nonpaged_Area [moved from Vista/ Windows 7 BSOD]

0x50 = invalid memory referenced
0xd0 = kernel attempted to access invalid memory
0xe3 = thread tried to release a resource it did not own
0xd1 = kernel-mode driver attempted to access invalid memory

Test RAM - Run memtest86+ - http://www.techsupportforum.com/2863029-post5.html

Regards. . .



Read other 1 answers

After BSOD problems (0x00000050), I took my two month old Dell desktop back to Geek Squad under warranty. Said problem wasn't hardware, but software, and would charge to fix. I took it home and reinstalled Win 7. BSOD (0x0000007b) with a Dell installation CD, but otherwise fine except it keeps restarting itself at various intervals. When I tried installing drivers, it wouldn't recognize Ethernet card. Not sure what's going on. Wife thinks a no-name anti-virus CD will fix it all, but I'd appreciate your advice.
Attachment 229276

A:BSOD reboot, still BSOD problems & failure to recognize Ethernet card

Zip file uploaded to post above. Thanks.

Read other 1 answers


You guys have been great before, and I hope that someone can help me tackle this.

My friend's computer started going weird after playing a game that uses Shockwave. (That's the last thing they remember...) When loading into Windows (regular mode), after selecting (any) user all you see on the screen is black with blue spots all over.

They're using an Asus P5DV2-VM SE motherboard
Intel E2140 (1.6GHz) CPU,
with a 450w PSU.

Originally I thought it was video-driver related as they're using the onboard graphics card. It's a Via P4M890-based motherboard although it has a PCIe expansion.

Loading in safe mode usually works, and loading into VGA mode got me into Windows however I received a 0x8E pretty quickly. At some point I also received a 0xA3. I tried uninstalling the video driver (Via Chrome9). That allowed me back into regular mode but soon after I got a BSOD. I tried running System Restore from safemode and I got 0xA3 (ACPI_DRIVER_INTERNAL) but I can't find info on fixing this one.

Thanks in advance,

A:Bsod 0xa3 And 0x8e - Unusual/unclear Picture And Random Bsod

0x8e errors are usually caused by driver issues. Here is what Microsoft says regarding 0xa3 errors:An inconsistency in the ACPI driver is so severe that continuing to run would cause serious problems. One possible source of this problem is a BIOS error.Drivers and Windows interacts with the BIOS. Have you tried a BIOS update? Usually this is not recommended as it can cause serious issues if the update is not performed correctly, but is recommended when the BIOS is suspected to be the cause of an issue such as this.EDIT: all you see on the screen is black with blue spots all over.I just remembered having an issue like this, and it was corrected by simply reseating the video card. Just thought I would mention this.

Read other 7 answers

I have been getting a ton of bsods I have re installed video drivers, updated and reinstalled windows 8. Did countless hardware test(Video ram, check memory, Cpu test) all passed temperatures stay around 25-35 c.
Recently uninstalled all video drivers and re installed. The bsods sometimes go away for a week or two but come back. and sometimes when it bsods there is a static noise inside of the computer, and the blue screen becomes distorted
Ive attached the dump files, if someone could help me pinpoint the piece of hardware so I can ship it out for repair please.

A:Random BSOD 0x00000124 Hall.dll (Bsod is distorted/static sound)

* *
* Bugcheck Analysis *
* *

Use !analyze -v to get detailed debugging information.

BugCheck 124, {0, ffffe00154472028, bf800000, 124}

Probably caused by : GenuineIntel

Followup: MachineOwner
I know you said you've run hardware tests, but in our experience you have to run specific tests according to a specific regime. Run all of these and report back.

RAM - run a minimum of 8 consecutive passes, no less
RAM - Test with Memtest86+

CPU - run the STANDARD test only
CPU - Stress Test Using IntelBurnTest

Video - run for 20 mins
Video Card - Stress Test with Furmark

Storage - run the SHORT test only using the DOS version
SeaTools for DOS and Windows - How to Use

Read other 3 answers

Hi all, really getting a headache trying to fix my mums laptop out but I am struggling miserably.

I have no idea what she has done, obviously claiming to have done nothing but basically I got a text this morning asking me to take a look at the laptop because it wont turn on.

First thing is the Windows bootup screen, improper shutdown asking to boot in safemode/normal etc. I chose normal and just as it was about to boot into Windows a fast BSOD appeared for a split second and then the laptop restarted, to the same screen. This time I chose Last known configuration, same happened. The BSOD's were so fast I cannot get a glance at it.
I tried in safe mode and it seemed fine, but I didnt know what I should try to do. So I did a system restore and this worked ok but again it wouldnt boot up.

After hours of trying, I googled some and downloaded Windows Vista Recovery Disc and I attempted the Automatic System Repair but it told me failed to detect any problems. Tried it again, and same. So then I attempted to boot it back up, but nope. BSOD again.

The laptop did come with a typical recovery disc but I am unable to find that, and the Windows Vista label is stuck underneath the Laptop so I downloaded a copy of Windows Vista to install and I managed to format the harddrive.

Now this is what bugs me, I cannot even install a fresh copy of Windows, I am actually trying again as we speak but even whilst "Copying the files" on the Windows installation, it BSOD's on ... Read more

A:[SOLVED] Windows Vista - BSOD's while trying to bootup, now also BSOD's whilst reinst


STOP: 0x000000001A (0x00041284. 0xA4884001....

I just tried again for 4th time and I managed to type this much above ^^ before the laptop restarted itself :(

Read other 17 answers

Hello. I am experiencing some random BSODs. It happens no matter what program is running. It could be in a game, surfing the internet, or listening to music. It is very random. Happens about once every two days on average. Some days are worse.

I have tried running driver verifier, but it would still only bsod occasionally, except it would bsod on startup instead of being in the desktop and getting a bsod.

I have also ran memtest x86 a few times and found no errors.

My windows 7 is:
-x64 bit Professional Edition
-Original OS installed on my system (I built the system)
-Full retail.
-Built my system over the summer. Been getting occassional BSODs ever since.
-OS installation is about 4 months old.

And if this helps, My system parts are:
-Intel i7 860
-EVGA P55 LE motherboard (using onboard audio as well)
-EVGA gtx 470
-Adata G-Series DDR3 1600mhz ram (2x2gb)
-some low-end hitachi 750gb hard drive
-Thermaltake Toughpower XT 775 watt.

Yes I have installed all the latest drivers from all the manufaturers' websites.

I have also attached a BSOD dump and system health report.

Please and thank you for your help.

A:Random BSOD... Help please (BSOD dump & system health report attached)

Welcome to SF.

Like you indicated, you have the latest video driver.

However, your network and wireless network drivers need updating.

Marvell Yukon:
Driver c:\windows\system32\drivers\yk62x64.sys (, 384.00 KB (393,216 bytes), 6/15/2009 2:10 AM)

D-Link Adapter:
Driver c:\windows\system32\drivers\athrx.sys (, 1.47 MB (1,542,656 bytes), 10/5/2009 4:34 PM)

Followup: memory_corruption

4: kd> !analyze -v;r;kv;lmtn;lmtsmn
* *
* Bugcheck Analysis *
* *

An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high. This is usually
caused by drivers using improper addresses.
If a kernel debugger is available get the stack backtrace.
Arg1: 0000000000000024, memory referenced
Arg2: 000000000000000d, IRQL
Arg3: 0000000000000001, bitfield :
bit 0 : value 0 = read operation, 1 = write operation
bit 3 : value 0 = not an execute operation, 1 = execute operation (only on chips which support this level of status)
Arg4: fffff8000348856f, address which... Read more

Read other 7 answers