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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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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 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....!!!!!

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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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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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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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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 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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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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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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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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"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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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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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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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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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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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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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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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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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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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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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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Hi all:

I'm looking for any suggestions for a system error message I've just started getting. When I try to start my pc I get as far as the Windows logon screen and then it hangs with this message:

Stop: c000021a {Fatal System Error} The windows logon process system process terminated unexpectedly with a status of 0xc0000005 (0x00000000 0x00000000).
The system has been shut down.

I tried to get into safe mode and also tried "Use last known good configuration" without success. Is this a software or hardware issue and can I try anything before reloading the operating system? If I have to try to reload will I lose everything on the drive?

This is an older pc - Compaq Presario (approx 7 years old), running WindowsXP Home, sp2 and had all available updates. I haven't added or removed any software recently. The only thing unusual in the recent past was a power outage two days ago, but it was running fine yesterday. Today I played World of Warcraft for a short time then downloaded updates for SuperAntiSpyware and Adaware, shut the pc down and when I tried to turn it on, started getting this message.

I would appreciate any suggestions anyone might have. If it comes to an operating system reload, I'd be grateful for any suggestions for saving existing data on the drive.

Thanks in advance.

A:Stop: C000021a {fatal System Error}

I'd suggest taking a look at a few of the links below:http://www.google.com/search?hl=en&q=X...amp;btnG=SearchSeems to be a varied phenomenon, which means it will probably take time to resolve.Louis

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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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This is long but stick with me...
The message:
"Stop: c000021a {Fatal System Error} The windows logon process system process terminated unexpectedly with a status of 0xc000000s (0x000000000 0x00000000). The system has been shut down." willappear on the blue screen of death. Sometimes a popup message will appear before quoting "winlogon experienced a problem and must be terminated. Press OK to terminate, press cancel to debug. If I donít push anything my computer will go on running fine. If I press OK, cancel, or the X on the top right, the computer will display another message saying the "memory cannot be read" if I get to this point my computer will undoubtedly fail If I leave the second message be, it will duplicate itself over and over again freezing my computer and eventually displaying the message at the top of this form. If I hit OK or the X it will go to that message at the top anyway. it is usually trigged by logging on from hibernate or stand by after the computer was on hibernate for a long time and suddenly put back on, and turned off to hibernate again. (That last sentence simplified: Computer Hibernation: 2+ hours. Computer turned on: 1- Hours: Computer hibernation or stand by: less than 30 min. on again + Error message displayed in 2-5 min after 3rd use.) Iím not sure I can get more specific from my personal explanation. If anyone understands that, please let me know whats happeing

A:Stop: c000021a {Fatal System Error}


Do you have GoBack running on that PC?

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Hey guys I have a problem. I'm running Windows XP SP2 on a laptop that has not been able to boot the last few days. The error message I get when starting is:

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.

There is no reference to what caused this, and I am unable to boot in safe mode. any help would be most appreciatve.

A:Stop: C000021a {fatal System Error}

Have you tried "Last Known Good Configuration" from the Safe Mode menu?If that doesn't work insert your Windows XP CD into the CD drive, and then restart the computer. Click to select any options that are required to start the computer from the CD drive if you are prompted. When the "Welcome to Setup" screen appears, press R to start the Recovery Console. If you have a dual-boot or multiple-boot computer, select the installation that you must access from the Recovery Console. When you are prompted, type the Administrator password. If the administrator password is blank, just press ENTER.Type: chkdsk /rIt's important to have a space before the "/".To exit the Recovery Console and restart the computer, type exit at the command prompt, and then press ENTER.

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hello,while playing games online, my system gets shutdown and if i restart, i will be getting " STOP:c000021a [fatal system error]" over blue screen. in order to start, i have to do restart several times..
any body can tell me how to fix this and what is actually ment by fatal system error? waiting for help..

A:STOP:c000021a [fatal system error]

Boot in safemode with networking and follows these instructions

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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 am getting this problem at the time of loading. After windows boot screen suddenly it shows the following-
"autochk program not found...Skipping Auto Check". It then immediately goes
to the blue screen with the following message:

"STOP: c000021a {Fatal System Error}
The Session Manager Initialization system process terminiated unexpectedly
with a status of 0xc000003a (0x00000000 0x00000000).
The system has been shut down."

Previously at time of log on it was showing ntoskrnl.exe corrupt or missing. so from recovery console I used expand command to overwrite the file in windows\system32 by using a XP installation CD.
After this I am getting this error.
I have windows XP SP3 that I upgraded from SP2 version that I have on my installation CD.
Please tell me remedy to solve this problem, I dont want to format, because it would a time consuming process and all settings and software will be gone.

A:STOP: c000021a {Fatal System Error}

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I've just got this error on my laptop which was working yesterday but after multiple restarts I ca get no further

A:stop: c000021a {fatal system error}

You may want to look Microsoft's MSDN System Error Codes reference

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I need some help.
Yesterday I restarted my computer (Dell Inspiron 700 m) and afeter i while and before windows beginns it appearce in a blue screen this massage:

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

Theres nothing I can do, I all ready try to start it in safe mode and to repair it with the windows cd, when I try tha last one I have to write a administrator password, wich my computer doesn?t have.

can some one help me?

A:STOP: c000021a (Fatal System Error) HELP!

G'Day 3.14p, and Welcome to TSF!


Theres nothing I can do, I all ready try to start it in safe mode and to repair it with the windows cd, when I try tha last one I have to write a administrator password, wich my computer doesn?t have.

You do not need to enter an Administrator Password here, you just need to hit the ENTER key to continue with the Repair Installation.

Hope this helps.

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I just bought a new computer from www.Arbico.co.uk, its a gaming computer which I also use for School coursework and it has LOTS of important information I've not saved onto my memory stick, and I need it back up and running. The problem that I've encountered is -- STOP: c000021a {Fatal System Error} The windows logon process terminated unexpectedly with a status of 0xc0000005 (0x00000000 0x00000000) -- Which comes on a blue screen before the login screen.

For the past week my computers Task bar, Start Panel wont show, just my background, no icons, I tried to fix it by uninstalling windows internet explorer 7, but it didn't help, I uninstalled the application and now my computer is doing this:-

Restarts EVERYTIME just before it shows the logon screen and brings up a blue screen with this message, STOP: c000021a {Fatal System Error} The windows logon process terminated unexpectedly with a status of 0xc0000005. I CANNOT get onto safe mode and cannot get onto last known good configuration either, and the caps are for those who always suggest start, run, because I explained I cannot even log on.

Can anyone please help me? Thanks


A:STOP: c000021a {Fatal System Error}

I've just bought a new power supply and I will try it out now, I will post here if it works.

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I am getting C000021a Fatal System Error 0xC0000005 (0x00000000 0x00000000) on another XP Home computer I have. I have read many posts on the web regarding this and the solutions proposed all require the computer to complete the startup process, get to the cmd line or get into safe mode. This computer cannot start up in safe mode (I get to the window to select the different safe mode options and when I try each one, the computer always gets stuck and displays the fatal system error message), I cannot get to a cmd line and when I insert the disk that Dell provided it makes the startup run a little further but still crashes with the fatal system error.

not ready to bring this to the shop yet until I try and get some help from people much smarter than me on this subject.

any suggestions/help to offer for a pc that cannot even start up in safe mode?

many thanks


A:C000021a Fatal System Error XP problem

What disk did Dell supply...Recovery disk?

You might have to get into Bios and set your boot order so that Your CD-Rom is first in boot order.

Pushing F2 immediately on startup might also give you the option to select your Cd-Rom (put the disk in first)

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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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stop: c000021a {fatal system error} the session manager initialization system process terminated unexpectedly with a status of 0x0000034 (0x00000000 0x00000000)

Windows XP SP3.

My computer had recently been infected by one of the fake "BUY OUR ANTIVIRUS PROGRAM YOUR COMPUTER IS DYING LOL" viruses. I removed it, (Security Suite, I believe) using safe mode and Malware Bytes. I had no problem for about three days. My computer has the trial version of Spyware Doctor antispyware and antivirus yadda yadda. (Can't afford REAL Antivirus at this time, so I try to stay off the internet on the computer.)

I was then trying to update Super Antispyware, only to realize that the fake virus had IE set to a proxy server. Super Antispyware wouldn'y update. I hadn't noticed that since I use firefox. When I changed it back, Super Antispyware DID update, and I ran a scan using it. While that was going on in the background, I played Quake 4. After about twenty minutes I was about to quite Quake 4, and decided to see if it needed to update. (I'm using my friends Quake 4 with a CD Crack because he ran off on vacation with the game before I realized you had to input the key in a second time when you first run the game. Yeah, yeah, I know, you shouldn't do that. I plan on reinstalling it when he gets back.) Anyway, I hit the upate, and it said it needed to update to 1.4.something or other. Then it went to desktop. Only there was nothing on my desktop. I hit alt-ta... Read more

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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My pc, OS windows xp home edition sp3, keeps booting on startup, I can't open in safe mode and I get this error

STOP: c000021a {Fatal System Error}
The Windows Logon Process system process terminated unexpectedly with a status of 0xc00000135 (0x00000000 0x0000000)
The system has been shutdown.

and also my pc is Dell Dimension 2350 and didn't come with the XP discs
any help will be appreciated

A:Stop:c000021a (fatal system error) please help

download and burn this file to a blank CD and then boot from it.

Once booted, run chkdsk /r and then reboot and see if that helps at all.

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I'm using Dell Inspiron 6000 Laptop. My laptop crashed after I did a big blunder. The os is windows XP Home Edition.

This is what I did:
To get rid of a start up error in psapi.dll after installing IE 7.0, per what I found in one of the forums, I renamed psapi.dll in my laptop. Installed latest version of Firefox broswer. By mistake I renamed this psapi.dll file under windows/system32 folder also. Later, when it prompted about windows log on alert, I clicked on yes (instead of no :(( ) and restarted my laptop.
Thats it my laptop got crashed. I get this below error now:

STOP: c000021a {Fatal system error}
the windows log on process system process terminated unexpectedly with a status of 0xc0000135

(0x00000000 0x00000000)
The system has been shut down

Is there a solution to recover my OS & my laptop. I cannot login now at all.
Can anyone please help??


A:STOP: c000021a {Fatal system error}

do you have the recovery CD? have you tried doing a repair using that recovery CD? if you do not have the recovery CD, try the steps here:

i hope you have a good back up.

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hey guys wondering if u could help me repair my mac pro with xp x64. I rebooted after uninstalled an antivirus and i got this error prior to the login screen.

"c000021a STOP: {Fatal System Error} The Windows Login Process system process terminated unexpectedly with a status of 0xc00000080 (0x00000000 0x00000000) The system has been shut down".

Awh i know i can just boot in the xp x64 cd and format/reinstall, but i had alot of important stuff on the drive that i would like to to save. So is there away to fix it,I dont see a repair option in my xp x64 setup cd. Now ive tried hooking up the drive to an external connector and tried accessing some of the data, but its all locked.

A:XP X64 and STOP: c000021a {Fatal System Error}

do you have goback installed on the machine

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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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