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Malware doctor infection removal and then error c000021a (fatal system error)

Q: Malware doctor infection removal and then error c000021a (fatal system error)

Hi,I have fundamentally the same problem as Laura H from this thread http://www.bleepingcomputer.com/forums/topic342716.html.I've had problems with these fake antivirus programs before and they really did a number on my laptop. I treated the problem using various tools mostly malware bytes and deleting some suspect files.Been working fine for the most part however today out out of nowhere I was attacked by malware doctor. I deleted the suspect file from the temporary internet files folder and ran malware bytes that detected trojan and deleted. Shortly after drwatson ??? was shut down and some time later I think explorer shut down because my desktop went back to basics....no theme,desktop wallpaper etc. the windows 95 look if you grasp what I'm trying to get at. I thought it was no big issue and in my own time restarted laptop when I realized audio wasn't working after trying to play a film.Upon restart I get the blue screen with the same message as Lauras. So for the most part I'm in the same situation as Laura with some minor differences such as I didn't use Spy doctor etc.I have Kaspersky AV installed which has been inefficient in protecting my laptop lately, especially from these fake AV attacks. I am using Windows Firewall which I know is a bad idea.Myrti was helping Laura resolve the issue and I have followed her instructions upto the following actions:'locate this file and right click it > choose rename > rename it to userinit.txtnow we will do the same for explorer.exe and winlogon.exe and hlp.dat and rename the filefind.txt after each search in explorer.txt, winlogon.txt and hpl.txt respectively. ''I will paste the text from these files below. Laura couldn't access her USB in xPUD so Myrti went off on a different direction which I cannot follow. If Myrti could tell me what I need to do after creating the text files it would be of a really great help. Anyone else is also welcome to put in their 2 cents too.Search results for userinit.exe39b1ffb03c2296323832acbae50d2aff /mnt/sda1/WINDOWS/system32/dllcache/userinit.exe24.0K Aug 4 200439b1ffb03c2296323832acbae50d2aff /mnt/sda1/WINDOWS/system32/userinit.exe24.0K Aug 4 2004a93aee1928a9d7ce3e16d24ec7380f89 /mnt/sda1/WINDOWS/SoftwareDistribution/Download/e9500597a78495f397efb821e37bf356/userinit.exe25.5K Apr 14 200839b1ffb03c2296323832acbae50d2aff /mnt/sda1/WINDOWS/ERDNT/cache/userinit.exe24.0K Aug 4 2004Search results for explorer.exed594ea4ac1c0e4675ef2f0063950abef /mnt/sda1/Program Files/Malwarebytes' Anti-Malware/explorer.exe1.0M Jul 23 13:19f2ca5f1467b05dd200373abcb034cb0e /mnt/sda1/WINDOWS/system32/dllcache/explorer.exe1008.0K Aug 4 200412896823fb95bfb3dc9b46bcaedc9923 /mnt/sda1/WINDOWS/SoftwareDistribution/Download/e9500597a78495f397efb821e37bf356/explorer.exe1009.5K Apr 14 2008a0732187050030ae399b241436565e64 /mnt/sda1/WINDOWS/ERDNT/cache/explorer.exe1008.0K Aug 4 2004cc1e71bb2025625c999c1eb3c126bbb5 /mnt/sda1/WINDOWS/explorer.exe1008.0K Aug 4 2004Search results for winlogon.exeaf2bf5320da47fc541c66814b2bb1d1e /mnt/sda1/WINDOWS/system32/dllcache/winlogon.exe490.5K Aug 4 2004ed0ef0a136dec83df69f04118870003e /mnt/sda1/WINDOWS/SoftwareDistribution/Download/e9500597a78495f397efb821e37bf356/winlogon.exe496.0K Apr 14 200801c3346c241652f43aed8e2149881bfe /mnt/sda1/WINDOWS/ERDNT/cache/winlogon.exe490.5K Aug 4 2004Search results for hlp.data4ec5c2e51814d684b2b0a1d8441ced1 /mnt/sda1/Documents and Settings/All Users/Documents/Server/hlp.dat34.9K Aug 4 2004Thank you !!!!Can anyone tell what is wrong with the system from the text files or is it too early to tell yet?Btw I am running Windows XP, not sure about SP, prob 1 maybe 2.To confirm safe mode, last known config and all other options lead to blue screen with error message.EDIT: Posts merged ~BP

Preferred Solution: Malware doctor infection removal and then error c000021a (fatal system error)

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

A: Malware doctor infection removal and then error c000021a (fatal system error)

Hello,Please follow the instructions in ==>This Guide<==. If you cannot complete a step, skip it and continue.Once the proper logs are created, then make a NEW TOPIC and post it ==>HERE<== Please include a description of your computer issues and what you have done to resolve them.If you can produce at least some of the logs, then please create the new topic and explain what happens when you try to create the log(s) that you couldn't get. If you cannot produce any of the logs, then still post the topic and explain that you followed the Prep. Guide, were unable to create the logs, and describe what happens when you try to create the logs.Orange Blossom

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HelloMy computer has windows XP and got infected with Security Suite and Anti Malware Doctor Protection Centre and after going through the guides to remove them, they were still there. I ran the trial version of Spyware Doctor with Antivirus and it identified something like 15 threats (inc. backdoor.trojan, trojan.bamital, trojan.fakeAV, backdoor.agent.LEL, trojandownloader.agent.OGP, dialer.coulomb_Dialer) and 70 infections so I purchased the full version and ran the scan. Then I removed the threats and rebooted as instructed. When I rebooted, my laptop froze on the blue screen with :STOP: c000021a {Fatal System Error}The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x00000000).The system has been shut down.I contacted the Spyware Doctor support but they just told me to contact the laptop manufacturer and do a repair install. I got the laptop second hand and don't have any startup disks. I'm quite a novice with computers so not sure what to do. Also, I have some files that aren't backed up and would like not to lose them.I've tried rebooting in safe mode, safe mode with networking, normal mode, last know good configuration but everything brings up the same screen.Please help!Laura

A:c000021a {fatal system error} after using Spyware Doctor to remove Security Suite and Anti Marware Doctor

Hi Laura,I hope you could get the money back from spyware doctor at the very least.Do you have any kind of bootable CD available? Can you create a bootable CD on a different PC to use on your laptop?regards myrti

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Hi, I have been getting the dreaded blue screen of death with STOP: c000021a (Fatal System Error)" Error Occurs when i log into my windows 2000 service pack 3 and my linksys wireless usb network adapter connects me to the internet. My computer will remain on and run fine if i do not connect to the internet. This also will happen if i connect to the internet using my backup 56k modem. Any suggestions on what is happening?

A:STOP: c000021a (Fatal System Error)" Error Occurs

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I Own HP ENVY 4-1046tx UltrabookLast time i forced shutdown the laptop (because it got hanged!)and after that i got this errorsafe mode is not workand last know good configration disnt have any effect.sugguest a way out of this....!!!!!

View Solution.

A:Blue screen error - c000021a Fatal system error

Solved.... Solved.... n solvedby some mean (confidencial way) i have installed window in it...!Thnxx for help and suggestion.

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Hey, I have Windows 7 running on my HP Pavilion g6 Laptop: Notebook Model: HP Pavilion g6 Notebook pCProduct Number: QE058UA#ABASerial Number: 5CG1390N72  Yesterday I clicked accidentally on the  Windows 10 popup dialog which appeared below right in the corner   . The system run 20 minutes and did some cofiguration,  as a result I am getting this error in the advanced boot options. coooo21a {fatal eystem error}. The initial session process or system procress terminated unexpectedly with status of0x0000001 0x000107c8. The system has been shut down I have tried several options to solve the problem: 1.Lunch startup Repair (recommended) ---> Problem signuture:Problem Event Name:         StartRepairOfflinePromlem Signature 01:      6.1.7600.16385Promlem Signature 02:      6.1.7600.16385Promlem Signature 03:      unknownPromlem Signature 04:      -1Promlem Signature 05:      AutoFailoverPromlem Signature 06:     18Promlem Signature 07:     BadPatchOS version:                             6.1.7600. ID:             &nb... Read more

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I'm having a problem with my sister in law's computer. Originally, she had that annoying XP 2008 virus/spyware, which I think I managed to get rid of with Malwarebytes' Anti Malware and System Mechanic 7. Now I have a new problem. After receiving a recent download from microsoft, upon restarting, I get the blue screen of death with this message;

STOP: C000021a (Fatal System Error) The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000005 (0x00000000 0x00000000)

I can't get anywhere into Windows, I've done F2, F8, F12, everything I could think of without risking more damage since I'm not trained for this. I've booted from the system mechanic CD with the Hard Drive recovery, and while it said it found and fixed a problem, it didn't fix this one. I have no windows CD. The computer is a Dell, and it's running Windows XP service pack 2 with Explorer 6. Heeeeeelp! Other than the F keys, I can't get anywhere with this computer.

A:Error Message blue screen of death C000021a Fatal System Error Windows Logon Process

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Hi everyone,
This morning I turned on my PC (Windows 7 x64) and I get this blue screen error STOP:c000021a [FATAL SYSTEM ERROR].
I can't even get passed the starting windows screen it just keeps on rebooting then getting blue screen again. I've tried safe mode and last known configuration point. Both just give me blue screen after the drivers are loaded. Haven't installed anything new recently so I don't know what the cause of this problem could be. I apparently have no system restore points even though Norton would make them every scan. I can get to command prompt and that is the only thing I can get to. Is there a way I can fix this through command prompt. I think I've attached the screen it gives me and that's all I know.

A:Error code c000021a [FATAL SYSTEM ERROR]

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Sony Vaio VPCEH25FM laptop

Sorry can not post screenshot but this is what is going on...
STOP: c000021a {Fatal System Error}

The initial session process or system process terminated unexpectedly with a status of 0x00000000 (0xc0000001 0x00010620) The System Has Been Shut down.

When the start up repair runs it tells me it can not repair it automatically and I get this...
Problem Signature
Problem Event Name: Start Up Repair Offline
Problem Signature 01: .6.1.7600.16385
02: .6.1.7600.16385
04: -1
06: 12
OS Version 6.1.7601.
Locale ID 1033

Is this enough info for someone to please help me?

A:Fatal System Error c000021a

Please read BSOD Posting Instructions & How to upload files

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i was using my computer then i got infected by a virus i try to open the internet but it would not open then i try to turn it off but whould not turn of so i unpugged it.then on it back but the srceen went blue and said:stop:c000021a {fatal system error} the window logon process terminated unexpectedly with a sate of 0x0000034 (0x00000000 0x00000000).the system has been shutdown someone plz help me .

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hi there to all geniius ppl
i am stuck my my xp installation pro
everything was going fine after deleting partiion, creating partiion, formatting but when installation start, its just stop at about 60 percent on a blue screen saying stop: c000021a (fatal system error). the windows logon process terminated unexpectablly with a status f oxc0000135#
the system has been shut down
i dont hve access to c promth..nothing
plz plz help me

A:c000021a(fatal system error)

Try erasing everything on the hard drive by using a third party program such as DBAN (Link available in my signature).

After DBAN is finished - then try installing XP again.

Let us know if it works,


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A:C000021a Fatal system Error

take a look here, see if it helps.

you will need access to the internet, though. Can you boot in safe mode?

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When I start my computer a black screen with the Dell logo comes on www.dell.com, Dimension 8100, BIOS Revision A09 and F2=Setup f12=Boot Menu in the upper right corner. Then it goes to another black screen that list some information on the type of BIOS,copyright information etc then it says Primary hard disk 1 not found strike the F1 key to continue, F2 to run the setup utility. When I strike the F1 key the Windows XP logo comes on like it is going to start and then it goes to a blue screen with the following message. STOP: c000021a {Fatal system Error} The Session Manager Initilalization system process terminated unexpectantly with a status of 0xc0000034 (0x0000000 0x00000000). The system has been shut down.
I called Dell who had me run hardware test from the setup utility which said the system didn't have hardware issues. They had me turn off Primary drive 0 and Primary drive 1 before I ran the tests. Now I'm getting that error message primary hard disk drive 1 not found. From the F12 Boot menu I ran my Norton SystemWorks CD and ran Norton AntiVirus which didn' find any virus. When I ran this the night before this all started it found Dc13.exe, csrss.exe, ntsrv.exe and services.exe which I tried to quarantine and delete with no success. I have Dell Dimension 8100, Pentium 4 1.4GHz, 384MB PC800 RDRAM, 40GB Ultra ATA Hard Drive (7200RPM),, 32MB DDR NVIDIA Graphic Card. I use a Westell Versalink gateway (model 327w15-06) to access my Verizon DSL and... Read more

A:Fatal System Error C000021a

One seemingly odd question, is the clock accurate? Computers have a small power supply, a battery or capacitor to keep bios information up to date when computer is turned off. Sometimes this power supply goes bad and has trouble finding hard drive and also resets clock to 12:00 on whatever the earliest date in its program is.

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Hello All,

I have just installed a clean install of win xp sp2 on my dell vostro 1500. it worked fine for 2 days, but this morning when i started computer , it starts and as soon as i c my desktop, i get a blue screen saying this message:

"c000021a fatal system error, the windows subsytem process terminated unexpectedly - 0x7c9101b3 0x0069f28c"

the dumping process started ... and it does that restarts and does the same again.

can some one please help me out.

Thanks i appreciate it.

A:C000021a fatal system error in WIN XP pro sp2

Worth a look: http://support.microsoft.com/kb/112455, technical info follows:0xC000021A: STATUS_SYSTEM_PROCESS_TERMINATEDThis occurs when Windows switches into kernel mode and a user-mode subsystem, such as Winlogon or the Client Server Runtime Subsystem (CSRSS), is compromised. Security can no longer be guaranteed. Because Win XP can?t run without Winlogon or CSRSS, this is one of the few situations where the failure of a user-mode service can cause the system to stop responding. This Stop message also can occur as a result of malware infestation or when the computer is restarted after a system administrator has modified permissions so that the SYSTEM account no longer has adequate permissions to access system files and folders.If the reason for the reinstall was malware...I would say that odds are that you are still infected. My suggestion would be to ask to have this thread moved to the Am I Infected forum. The problem with that is that you don't seem to be able to boot into Windows to do anything useful.If you are sure...not just wishful...that it's not a malware situation, then I would suggest a repair install of XP.Could also be some type of hardware problem, but that's just enumeration of the logical suspects possible. You haven't posted sufficient information for anyone to make that call, IMO.Louis

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i have reformated my hp pavilion dv5000 laptop. i tried to get rid of that stupid blue screen. i reinstalled windows xp but when i try to upgrade to vista i get a blue screen with c000021a fatal system error. how do i finally fix this problem

A:c000021a fatal system error

Talk to HP tech support, or get the model number from the label on the back, then go to the HP support and downloads site to download all the drivers and fixes for that model listed on the label... and print the install instructions... Simple matter, but time consuming.

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i have reformated my hp pavilion dv5000 laptop. i tried to get rid of that stupid blue screen. i reinstalled windows xp but when i try to upgrade to vista i get a blue screen with c000021a fatal system error. how do i finally fix this problem.

A:c000021a fatal system error

Download and install all the drivers for that model (as posted on the label on the back, not the bezel on the front). Do the Chipset first, then the video graphics, then all the others. Soon you will be done.

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My desktop computer has completely ceased all function. When I try to boot up, it thinks to itself for a minute, and then flashes the blue screen with this error:

STOP: c000021a {Fatal System Error}
The initial session process or system process terminated unexpectedly with a status of 0x00000000 (0xc0000034 0x00100604).
The system has been shut down.

It does this every single time that I start the computer. I get the option to try and repair, but it just takes 10 minutes longer to reach the same exact result.

I'd like to give a little bit of history to explain the situation better:

The desktop (a Dell XPS 410) began acting fishy about 2 weeks ago, when it began randomly crashing, giving me BSOD's with a variety of errors, including PAGE_FAULT_IN_NONPAGED_AREA and KERNEL_STACK_INPAGE_ERROR. It would always crash within a few hours of rebooting, usually when anti-virus was running, or simply if a lot was going on.

I surfed around for solutions (some here, many in other places), and tried to use the chkdsk /f /r and sfc /scannow programs. Trying to run chkdsk /f /r would nearly finish completing - up until processing the "free clusters" of memory, when it would freeze.

Ever since running the sfc /scannow program, my computer has been in its current predicament. I'm fuming over this, because I've got a lot of files that I'd rather not lose.

Please keep in mind: I cannot get my desktop to boot. PERIOD. Any suggestions as to what could be done will be appreciated.... Read more

A:c000021a Fatal System Error

Sounds like a RAM error... I think.

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Hi Guys

I know this sounds like a very common problem but I can't get my Dell Inspiron 1300 to boot I get the STOP msg above with the associated blue screen of death.

WinXP starts to load then stops.

The status is: 0x0000003a (0x00000000 0x00000000)

The machine will not even boot from the recovery disk.

Any ideas?


A:c000021a {Fatal system Error}

Hello Hugo and Welcome to TSF. I did some research it seems Norton Go Back bundled in Norton SystemWorks could be the culprit. Have a look here http://www.castlecops.com/p801026-Fa...x00000000.html. Report back with successes and failures.

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Hello all my laptop recently caught what i believe was called vundo virus, i deleted two .dll's that my anti virus program said were bad. Upon rebooting my computer would get to windows loading screen then give me a blue message which said stop C000021a fatal system error and mentioned something about the logon and it gave me a code 0x00000000 (0x00000000 0x00000000) i brought it to a tech shop and they could not fix it. Although my other two Os's vista and linux will boot my xp pro is having issue's only.I went through vista and used cmd to restore those two dll's from the recycling bin and i rebooterd and got back into xp and no blue screen ! then about 15min later my laptop died(i didnt notice the charger came out).When i plugged it back in and tried to boot xp it again gave me blue message ><.I went back on vista and went online and someone said to replace the winlogon.exe with the on from cd i tried it and still got a blue screen but now with an error code of 0xc000012f 0x0000000 0x00000000.Thank you for reading any help will be greatly appreciated.

A:c000021a {fatal system error}

Also forgot to mention i can't get in to xp with safe mode,last known good config or any of that i tried chkdsk -r in recovery console and nothing still!

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STOP: c000021a {Fatal System Error}
The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x0000000)
The system has been shutdown.

this is the exact error code i have

im using Dell Inspiron E1705, it was microsoft xp media center edition, with 4gb of ram, 32bit, 2.0 ghz, and 2 duo core cpu...thats all i could remember..

i transferred the folder "Microsoft Games" off my windows vista to my windows xp, but it didnt work, but i dont think thats what caused this to happened...

well...yesterday i was watching "AIR" anime, then i stopped watching it, then i was trying to find "InkBall" (its a game only for vista) a version that is compatible with xp, but it turns out none of it worked, some instructions required me to add a new folder in c:\windows, so i did, yet it didnt work, so i just deleted the folder

i downloaded VAIOP (i think thats what it was called...) and widows journal viewer. they were both compatible to windows xp...

i was cleaning my computer using this program called "Auslogics Bootspeed" it scanned that i had 650-ish temp files, but it couldnt delete it, so i tried delete it manually...so i manually ended a process name called "itt928.tmp" i think it was like that...then i restarted the computer, then thats where my problem started...

when i reboot my computer, after the windows xp logo, it goes into BSOD, then i tried starting in safe mode wi... Read more

A:c000021a {Fatal System Error}

I did some research, and found some people with the same problem on the CNET forums. See if this helps.

I am narrowing in on the problem...
by Dick White - 4/15/05 10:45 PM
In reply to: XP startup-Fatal system error-session manager initialization by Strangette
and its a real *****! So far, attempting to boot to Safe Mode or any other option on the F8 boot menu has no effect. The initialization error occurs before even safe mode is reached, so it becomes an endless loop of splash screen, reboot, splash screen, reboot, rinse and repeat.

The only solution that has yet worked for me is reloading the operating system from the install CD. Fortunately I have built all my systems from scratch with genuine M$ install CDs, not the big OEM house restore disks. Thus, I can use the repair option in the first screen of the retail install and not lose have the routine reset the partition to the original factory load. I am currently on my third reload of the evening and it is 1:30 in the freakin' morning so I am not a happy camper and I am not likely to finish troubleshooting this tonight, but here is what I know so far.

When the OS is reloaded from the original CD (a 40 minute process that looks exactly like a virgin install, but actually just overwrites the Windoze system files without blowing off the registry or any programs or data) TURN OFF Automatic Updates!!!! You may go to the Windoze Updates site manually and let it search for updates, but use the "Custom In... Read more

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Today *turn on my computer and it restarts after the boot up screen
and it keeps doing it in a loop
I boot it up without restart on system failure and i get a blue screen
and an error message
STOP: c000021a Fatal System error

So far in only works in safe mode
please help!

Here is a copy of my hijackthis log

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 10:31:28 PM, on 11/20/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Safe mode with network support

Running processes:
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\Administrator\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL

= http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =

R1 - HKCU\Software\Microsoft\Windows\Curre... Read more

A:Help c000021a fatal system error on XP SP3

Can anyone help me with this problem i cant get on the computer without safe mode

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Was wondering if anyone could help me.

I'm running a Rock Xtreme Laptop, 3.4GHz P4, 1024MB RAM, 80GB HDD.

Was running Windows XP Pro, however without reason on one boot It began to load XP, showed the Windows XP boot screen, however once that was finished, instead of displaying the welcome screen as usual, it showed a blank screen (no cursor).

I thought it to be a good idea to re-instal windows, I wasn't bothered about loosing files and folders (I have it all backed up). I tried installing XP Pro, It copied files successfuly after a quick NTFS format, however when it came to installation, I recieved a blue screen with the fatal system error C000021a. Apparently a KnownDLL file failed verification or something.

So I tried reformatting and installing Server 2003 Standard. Again same problem after files were successfully copied.

So... I tried Vista Ultimate, again to no avail. Setup copied files but failed to expand them (install).

Tried each Windows Installation also with full format (not quick), however they hung at 0%!

I presume it's a hard drive error, however need to fix it. Waranty expired Jan 07! !

If ANYONE has ANY IDEAS, please let me know asap. For ease could you please email them straight to [email protected].

Would be GREATLY appreciated. Thank you in advance for any help.

Dean Kellham

A:HELP! C000021a Fatal System Error

first you should not post your e-mail address there are bots that look for them and YOU WILL GET SPAMMED...
it sounds like the HD is dead or dieing...look here and see if you can run chkdsk...it could also be benificial to run memtest86 plus to make sure you don't have RAM problems..get the second one down...unzip it...it makes a bootable .ISO file..burn it to a cd ...put it in the cd drive and power up...let it run for at least 2 hours unless you start getting a bunch of errors..press escape to end the tests

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Recently I have been getting BSOD's.. got 3rd time in 5 bootups. It happens on Starting Windows screen.
The latest one said something like this:

STOP: c000021a {Fatal System Error}
The initial session process or system process terminated unexpectedly with a status of 0x00000000 (0xc0000006 ...... another combination of integers and alphabets which i can't recall)
The system has been shut down.

And this is not it; I have been getting problems lately.
1. This Starting Windows screen stays for long time, so boot time has doubled (or even more)

2. Weeks back, my system went slow overall; I was going to post in here, but before that I ran my Anti-virus, ran defrag tool and these didn't help. Then check disk helped me and everything went like normal.

When my system was slow, opening any drive took very long and was really frustrating. And i was amazed when I used to close the window since it took too much time, and when it was time, that drive was explored in a new window.

Also, I used to play movies, they used to get stuck in between... and that still happened after my system was faster, but it was kinda rare with some movies only.

So now, I am confused about my system. I wonder if both problems are connected to eachother.

I doubt it could be my HDD, though this system is just 1.5 years old.
PS: I checked on the internet for HDD Diagnostics tool and found this:
My PC's specs:
Windows 7 64bit
1 TB WD HDD (Device m... Read more

A:c000021a Fatal System Error

Hello sp33dky, try to boot into Advanced Boot Options > Last Know Good Configuration (advanced).

When booted into desktop, try a system restore to an earlier point of time than the problem is started. Let us know if it works or not.

For the disk caution, follow this post.

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i have a dell dim-2400 and i got the blue screen c000021a error and unable to do recovery with it it, has financial info on the hdd and i need to get it on a external hdd how can i get this thing back to work?

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Helping out a friend. Yesterday, we successfully removed the System Tool Virus. After I verified everything was working properly and left, he attempted to install Bit Defender and received the following error:

STOP: c000021a {Fatal System Error}
The Windows logon process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x00000000).
The system has been shut down.

I have tried Safe mode and system restore, both coming up with the same error.
Can anyone help me ?

OS is Windows XP, Dell Inspiron 9300 notebook computer.

A:Fatal System Error c000021a

0xc0000034 is the real error to be concerned with...the 21A is just a generic code resulting from the 34 STOP error.MS Says...I might add...from what I see, most persons with this error don't seem to have a solution other than "use System Restore" or "reinstall".Louis

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"The NT initial command process system process terminated unexpectedly (no sh*t!), with a status of 0xc0000001 (0x0000000, 0x0000000) The system has been shut down."

--What got me to this point:
Troubleshooting a Vista HP machine that had (mywebsearch) MWS and other non-lethal spywares ... and blue screens. Solved the MWS pretty easily with MWB....but the machine kept blue screening (went too fast to write down error codes). OK, so I ran numerous Vista diagnostics .. even removed the HD and ran error checker through another machine with this drive plugged in via SATA to USB adapter. Found and fixed some errors. Also replaced RAM with one of mine, no change in symptoms so I replaced factory ram.
Machine would boot up fine ... but very shortly therafter stop and/or blue screen. One error code I managed to get was relative to some ISATAP thing. I researched this and didn't find too much that was helpful, but I did go to device manager and uninstall this from the network adapter area.

I pulled another SATA 2.5 drive and inserted it into the machine with the intent of formatting and reinstalling OS. As soon as I turned on machine it said no hard drive was found and stopped. I repeated this process with 2 additional SATA 2.5 drives with the exact same error. This really got my head spinning.

I reinserted the orginal drive after downloading all the data to a separate machine and lo and behold, it came right up ... with same errors as noted earlier. So I ran the Vis... Read more

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My computer (64bit) has a blue screen that reads c000021a {fatal system error} and wont let me start up even in safe mode! We have run a start up repair and a system restore and both of those fail. Please help!

A:c000021a {Fatal System Error} What do I do now?

Hi cmozey, please run the following steps:Download http://unetbootin.sourceforge.net/unetboot...dows-latest.exe to the desktop of your clean computerInsert your USB drivePress Start > My Computer > right click your USB drive > choose Format > Quick formatDouble click the unetbootin-xpud-windows-387.exe that you just downloadedPress Run then OKIt will install a little bootable OS on your USBAfter it has completed do not choose to reboot the clean computer simply close the installerRemove the USB and insert it in the sick computerBoot the Sick computerPress F12 and choose to boot from the USBFollow the promptsA Welcome to xPUD screen will appearPress FileExpand mntsda1,2...usually corresponds to your HDDsdb1 is likely your USBNow for the tricky part; we need to locate replacement copies for two files: explorer.exe and wininit.exePlease see if you can do a file search for these two files and post me the locations you found.

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hi i am running windows xp home and when im starting my pc this error comes up in a blue screen:

STOP: c000021a (Fatal System Error)
The Windows Logon Process System process terminated unexpectedly with a status of 0xc0000005 (0x0000000 0x00000000). The system has been shut down.

i dunno how to solve it... any help would be greatly apprieciated.. thank you .

A:c000021a-fatal system error

can u plz give me a quick reply!!!!!!!!!!!!!!!!!

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I have a dell computer 8400. I use windows xp. My computer shuts down everytime I try to start it. It will say winlogon.exe error, if I want to report it to Microsoft. Then within 15 seconds, I get the blue screen of death. It says c000021a Fatal System Error. I have researched it, and have tried to boot from the cd rom. butttt my D cd rom is not working. The E is working....... The D hasnt worked for a while, I never had time to change the cd rom out and get another one. So I cant get the computer booted for the resourse cd. I have tried to go to the computer, to get the e cd rom to work, but by the time It comes up. the computer shuts down. I was thinking of putting another cd romm in the computer, but does it take a driver? If so, that wont work for me, because the computer wont give me any time to do anything, much less, download a driver........... The computer going into safe mode, but shuts off, no matter if I go to the prompt or other options...... Can someone please help me. Thanks

A:Solved: c000021a fatal system error

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When I try to shut down the system it gets part way through shutting down and then goes to a blue screen with the following message:-

Stop c000021a {Fatal System Error} The Windows Logon process system process terminated unexpectedly with a status of 0x00000000 (0x00000000 0x00000000)
The system has been shut down.

The OS is XP Home Edition SP3. Has anyone got ant idea what this is and how to fix it?

Your help will be much appreciated.

A:Stop c000021a {Fatal System Error}

Here is a couple of things that you can try. First when you start you computer, hit f8, then when the screen comes up choose to start from the "last configuration that worked". Then see if you are still getting the error.

If that doesn't work then you will have to pop your install disk into your computer and do a repair. This will do exactly what it says, it will repair your xp partition.

Try both of those things and see if either of them help.


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I have a DELL Inspiron E1705, with Windows XP, service pack2.
I get STOP: c000021a {Fatal System Error}
The windows Logon Process system process terminated unexpectedly with a status of 0xc0000135 (0x00000000 0x00000000).

I tried the F8 key & restart Last Known Good Configuration. Doesn't work.

I need help.

A:STOP: c000021a {Fatal System Error}

Hello maca93

Had you just made any changes such as installing a program/Updates or updating drivers?

Try a System Restore from Safe Mode.
Press F8 to boot to the Safe Mode Options screen
'Safe mode with command prompt'

At the command prompt type

Hopefully System Restore will open so pick a date a few days ago

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A development virtual machine (guest) with win7 prof SP1. The vm host Win10) crashed because defective ups and power loss.

Now one of my virtual machines with win7 sp1 do a reboot loop with BSOD c000021a fatal system error
last known good config didn't start: also c000021a
the last loaded dll is: ci.dll
The vm's backup is quite old. There were no restore points

I was trying a repair:  windows 7 startup repair said: registry corrupt

The automatic repair fails with error:  registry corrupt
I tried old reg restore
but the reg files were from now
fails, because of windows resource protection error

Question:Am I able/How to replace windows system files from old vm backup?


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The machine started to cycle on and off while on the internet. It went down and the blue screen appeared as the WINDOWS XP was loading. It got to loading personal settings and crashed.
Stop: c000021a {fata system error}
The windows logon process system process terminated unexpectedly with the status of 0xc0000005 (0x00000000 0x00000000). The system has been shut down.

This is the family PC with everything loaded onto it. All photos and kids homework. I dont want to lose this data.



A:stop: c000021a {fatal system error}

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Hope someone here can help me with this problem... I would greatly appreciate it. (Cause if I don't get this fixed, my family is going to drive me -nuts-).

So let's see. This is a family PC, has XP, sees a lot of action, downloads, etc. It's about two years old I would guess. There's often the occasional bug or pest but nothing major.

Then yesterday there was a virus (somethingBird, not blackbird though). I came into take a look at it. Symantec did its thing, cleaned it, said to reboot. Upon reboot, the desktop went blank (no icons, just the wallpaper). So I rebooted it again got this evil blue screen:

The Windows Logon Process system process terminated unexpectedly with
a status of 0xc0000005 (0x00000000 0x00000000).
The system has been shut down.

It will not restart in safe mode, always go back to the blue screen with the error message. I cannot access at all at this point and have now spent two hours scouting the internet on my laptop trying to find some sort of solution for this.

Can anyone help?


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Hi guys,
I know this has been asked before - but I cannot find the answer that solves my problem. On boot up I am getting the BSOD - with a

STOP: c000021a {Fatal System error}
The Windows Login Process system process terminated unexpectedly with a a status of 0xc0000005 (0x00000000 0x00000000).
The System has shut down

I am using XP SP3 on a Dell Dimension 3100c

Note I got this after using anti virus software
1) Spy bot
2) Avira
3) Suiperantispyware (I think this is what itr was called)

In forums I have seen they have suggested:
1) going into safe mode - doesn't work
2) Go back to "Last Known Configuration" - doesn't work :(
3) reinstalling/repairing XP with an installation disk - unfortunately I do not have one (came pre-installed with my computer)
4) to go into the recovery module and try chkdsk /r / fixboot/ fixmbr - neither of these worked
5) take out hard drive and put into another computer - I do not want to go near the hardware - as I am technically hardware inept. :)

Would you guys have any suggestions - I am at my wits end.

If it means going into the recovery module and stopping or starting a service - I can do that :)

Any help you can provide would be greatly appreciated.

A:BSOD - Fatal System Error (c000021a)

Hi Nev, I am going to give you a link that might I repeat might help you solve this issue. However it comes with a warning: Some of the troubleshooting steps involve working in your registry. Unless you know exactly what you are doing in there I don't recommend this. 90% of the time it will only make the problem worse. That said, I'm not quite sure if you will be able to apply any of these fixes becuase you don't have an XP disk, but you might be able to do something from the recovery console. Let me know if it helps you, and if not I will look for some other ways to try to help.


I will monitor this thread throughout the day. If you resolve this problem on your own or with the info I provided please let me know so I can move on to other issues. Also please mark this thread solved using the quick tools option located at the top of this thread.

Thank you

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I have a Dell XPS 400 running media center and am getting this same message. I have tried everyting I can think of including booting in safe mode and recovery to no avail. Any suggestions would be appreciated.


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Hi, I hope you can help, I am getting the Stop error above with the following info also. Stop C000021a (fatal system error) the verification of a known DLL has failed, system process failed unexpededley with astatus exception of oxc0000007b (0x000f9700 ox00000000) the system has been shut down.

I cannot boot at all, not even safe mode or last known good configuration. my system is Win 7 64bit. If I run startup repair it doesn't fix it, if I try to run SFC /SCANNOW it wont as it says it has a repair pending.

Please help, and thanks in advance.

Regards Dave

A:Stop C000021a (fatal system error)

Hi Dave and Welcome to TSF!

I'm not seeing any similar problems elsewhere, this may be unique to you :(

The suggestion in your thread elsewhere looks incorrect:

STOP: c000021a {Fatal System Error}
The Session Manager Initialization system process terminated unexpectedly with a status of 0xC000003a (0x00000000 0x00000000).
The system has shutdown.

Note The status will always be 0xC000003a if you are experiencing the issue described here.

You are describing a oxc0000007b, so the issue isn't as described by MS.

Standard troubleshooting for 0xC000021A:


This error occurs when a user-mode subsystem, such as WinLogon or the Client Server Run-Time Subsystem (CSRSS), has been fatally compromised and security can no longer be guaranteed. In response, the operating system switches to kernel mode. Microsoft Windows cannot run without WinLogon or CSRSS. Therefore, this is one of the few cases where the failure of a user-mode service can shut down the system.

Mismatched system files can also cause this error. This can occur if you have restored your hard disk from a backup. Some backup programs might skip restoring system files that they determine are in use.
Resolving the Problem

Running the kernel debugger is not useful in this situation because the actual error occurred in a user-mode process.

Resolving an error in a user-mode device driver, system service, or third-party app... Read more

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i hope someone might have some useful suggestions to help me with a fatal problem i have just experienced with my acer travelmate 5720 (intel duel core 2ghz running vista sp2) which was running ok when it was switched off. however, when i next tried to boot up, i was met with the bsod with the following message:

STOP: c000021a (fatal system error)

the initial session process or system process terminated unexpectedly with a status of 0x00000000 (0x0000001 0x00100764). the system has been shut down.

i have tried to bootup using safe mode but the system just hangs on the logon.

i have also tried to bootup using the last good configuration but the system fails to finish booting and hangs on the logon.

similarly, i have tried to boot to the c:/ prompt but again the system hangs and fails to complete the boot.

i have not tried to boot with a resue disc or reinstall the os - the hdd contains valuable data that is not backed up and which i cannot really afford to lose.

so, if anyone has so useful help or suggestions, i would be very grateful - please just do not tell me that i should have backed up my data more regularly!!!

many thanks in anticipation of some good advice or suggestions.


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Hi, I have a Dell Latitude E6500- Windows 7 Laptop - clean install fully updated. . After about an hour the machine will blue screen and need a manual reatart. Otherwise the machine performs fine. I ran Spinright, memtest86 with no errors. I removed the back plate and blew out the fan area. Any further troubleshooting tips would be appreciated. Also could not find any dump file on the system. See link for screen shot of BSOD

http:[email protected]/8166733268/

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When I boot up my computer with Win XP (SP2) my computer restart without giving any message. So I tried disabling restart if error arise. Then the problem identified was as

Stop C000021a {fatal system error}The session manager initialization system process terminated unexpectedly with a status of 0xc000026c (0x00000000, 0x0000000) The system has been shut down.

Does anyone have any idea to resove this problem? I even did not get any information from microsoft url.

with regards

A:Stop C000021a {fatal system error}

Maybe this will help.

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The other day we found a computer giving this error and continuosly resetting:
STOP: c000021a {Fatal System Error}
 The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000135 (0x00000000 0x0000000)
The system has been shutdown
We reviewed kb156669 and it says some causes:
•Mismatched system files have been installed:  "No as far as we know"
•A Service Pack installation has failed:  "No as far as we know"
•A backup program that is used to restore a hard disk did not correctly restore files that may have been in use:  "No as far as we know"
•An incompatible third-party program has been installed: "No as far as we know"
We resolved the problem copying the folder system32 from a new computer to the old but the question is if someone know how to troubleshoot this and to know exactly the cause.
Thanks in advance.

A:STOP: c000021a {Fatal System Error}

The previous person that used it might have added dual boot with linux and edited the .Ini boot file.


You understand that the system32 folder contains a folder called drivers, which contains the drivers related to the software installed on the operating system?
So basically copying the system32 folder from another pc, and expecting all software to run fine is not going to work out well for you.
For example, here i have 2 pcs, pc A and pc B.
Pc A has avast and malwarebytes software installed.  Pc B has Microsoft security essentials and SuperAntiSpyware installed.  How could i expect the system32 folder from pc A, to have the correct drivers for pc B?

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I have a Windows XP laptop with SP3. Earlier today I was just browsing the internet, nothing special, and out of nowhere I began getting all these popups from my Avira. Well, since I had this problem before and I solved it by clicking on delete file on each popup and then scanning my computer, I was planning on doing the same but the popups would not stop. I tried opening up Task Manager to see if I could see a program running that wasn't supposed to be or whatever but my task manager would not come up. Instead, I kept getting an error saying Task Manager could not start up because of something registry error or I'm not sure what it said. I got scared and just forced it to shut down.

When I tried to reboot, I got the blue screen saying STOP: c00002la {Fatal System Error}The Windows Logon process system process terminated unexpectedly with a status of Oxc0000034 (Ox00000000 Ox00000000). The system has been shut down.

I have tried running Safe Mode, booting from last configuration that worked. I have tried nearly everything I have seen online from using the Recovery Console, chkdsk, bootcfg, all those.. have copied the system files into tmp and tried to do what it said on the Windows website but nothing has changed. I don't want to lose my files because there are important pictures from my niece when she was born and everything I have done through college. I can't lose these files. I seen somewhere that some people somehow are able to copy the files onto the u... Read more

A:STOP: c000021a Fatal System Error

A repair installation will not affect your files, so this is one option. One other option it to try a System Restore. I'll provide you with instructions for both of these.System Restore.Start> All Programs> Accessories> System Tools> System Restore.When this opens make sure that "Restore my computer to an earlier time" is chosen, and click on Next>.The dates appearing in bold are the dates that you can restore to, click on the date that you want and then click Next> to start the System Restore. This may take a long time to complete, and when it is done it will restart your computer. When the computer restarts and you have logged on as the administrator a Restoration Complete page will appear, click on OK to complete the process.Repair Installation.Boot the computer from the XP CD. You may need to change boot order in the BIOS so that the CD-ROM is the first device in the boot order.When you see the "Welcome To Setup" screen, you will see the options below This portion of the Setup program prepares Microsoft Windows XP to run on your computer: To setup Windows XP now, press ENTER. To repair a Windows XP installation using Recovery Console, press R. To quit Setup without installing Windows XP, press F3.Press Enter to start the Windows Setup. To setup Windows XP now and Repair Install , press ENTER. You do not want to choose "To repair a Windows XP installation using the Recovery Console, press R.Accept the License Agr... Read more

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Dell 4600 series Windows XPTurn on the computer get the start up screen then a BLUE SCREEN.Blue Screen says:Stop: C000021a (fatal system error)Session Manager Initialization System process terminated unexpectidely with a status oxc000026c (0xc00000000 0xc00000000).This system has been shut down.I can't even get to Safe Mode. I tried to boot to last good configeration and doesn't change.Need some ideas.... I have read the forums and it seems that it might be a virus or something, but having problems getting to somewhere I can start cleaning. I have all the disks that came with the computer.Thanks...Tina

A:Stop: C000021a (fatal system error)

The error refers to the fact that the SMSS.EXE service was unable to load for some reason.Since you're not able to boot to Windows you'll have to look to either a repair install or a wipe and reinstall of Windows.For the repair install, read this first if you have IE7 installed: http://support.microsoft.com/?kbid=917964Then use this procedure for the repair install: http://www.michaelstevenstech.com/XPrepairinstall.htm

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Yesterday I did a system restore on my pc and there was a powercut. Since then I've not been able to get to the desktop - it just keeps rebooting and when I disabled the automatic restart I got the STOP: c000021a {Fatal System Error} message.

I've tried to start it in safe mode (all the options) and it won't - it just reboots again. I've tried the last known good configuration option to have it reboot again.

I use Windows XP

Can anyone help me please?


A:STOP: c000021a {Fatal System Error}

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As always, it's a long story, so I'll try to stick to just the pertinent details. Apologies in advance if I miss anything or if it's a bit disjointed.I have a 120GB SSD (OCZ) to replace the 300GB HDD in my laptop. I've copied the files over and tried to rebuild all the boot records etc. I'm now getting the BSoD:STOP: c000021a {Fatal System Error}
The Session Manager Initialization system process terminated unexpectedly with a
status of 0xc000003a (0x00000000 0x00000000).
The system has been shut down.It is a single partition on the SSD drive. It starts at a 2MB offset. Going into the Startup Repair simply yields "Checking Disk for Errors"* then tells me Startup Repair cannot repair this computer automatically.When I do sfc /scannow /offbootdir=C:\ /offwindir=C:\WindowsIt tells me it may take some time before saying "Windows Resource Protection could not perform the requested operation" - this is in a startup repair "Administrator" CMD window, don't forget. Also, it happens after two or three seconds - on a SSD, so it might be trying to fix something and can't...The windows installation comes from the old hard drive using Easeus partition manager. The old HDD had four partitions:100MB bootloader260GB C: Boot (Win7 home premium 32bit)30GB D: Recover1GB diagnostics (which I never even knew were there)I'd just cloned the boot partition to the SSD using Easeus. Then I used GPARTED to move the partition to th... Read more

A:STOP: c000021a Fatal System Error

First thing I understand is that you are using a OCZ boot SSD?Then if so go here and check for a firmware upgrade. OCZ SSD Firmware Updates and Tools With OCZ it is very important to be running he latest firmware. Second thing is that although I have cloned my Boot Partitions successfully they fulfilled two conditions.1. They were the only partition on the drive.2. I was using Intel SSDs. I used the Both The Intel and the Easeus todo for that purpose.3. OCZ recommends a clean Install.I suggest going here to their forums and selecting the one for your model drive and reading.From My reading The latest firmware and a clean install is helpful.I do have one OCZ 90Gb I use for playing since it was cheap. I did update it's firmware to 2.22. I did a clean Install and it seems stable, Knock wood. My Intels have many more hours, they cost a lot more too howeverIf your old Boot Drive was reliable then It has to be either the firmware or the way you tinkered with the drive after the clone process. I remember that Easeus had a box to check when cloning a SSD. Try re-cloning the drive and check the SSD box and see how that works for a while. Reliable?I've cloned I cloned four computers and did not have to do anything to get them to boot. I'm not sure what happened except that the fact that you had to fix it to get it to boot implies a problem with the cloning.Good LuckRoger

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I was trying to install nero multimedia suite 10 when my computer just turned itself off and restarted. then i got blue screen saying :-

STOP : c000021a (fatal system error ) the windows subsystem system process terminatted unexpectedly with a status of 0 c0000005

computer is still working ok ( touch wood ) but it logged the fatal error and now im abit worried its a serious problem?

any help guys?

ps i dont have a windows disk

A:STOP : c000021a (fatal system error )

Hi Tizza. Im not sure how technical you are but heres what this error means:

The STOP 0xC000021A error occurs when either Winlogon.exe or Csrss.exe fails. When the Windows NT kernel detects that either of these processes has stopped, it stops the system and raises the STOP 0xC000021A error. This error may have several causes. Among them are the following:
Mismatched system files have been installed.
A Service Pack installation has failed.
A backup program that is used to restore a hard disk did not correctly restore files that may have been in use.
An incompatible third-party program has been installed.

Heres a link if a fix is needed: http://support.microsoft.com/default...b;en-us;156669

You said the computer is working ok so I think your probably alright. I feel like a broken record because this is the 3rd time in 3 days I told someone to do this to fix a problem LOL. But its easy and it works. Do a system restore back to a date before this happened
since your able to boot up and your computer is still working. To do this go to start - programs - accessories - system tools - system restore. Select a highlighted date from before you got this message. Select system check point from the right and follow the on screen prompts. Make sure when your computer reboots it says that the system restore was successful and youll be ok my friend. Let me know if you need anymore help or if for some reason this doesnt fix your problem. Take care

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