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I can not boot my system. I get a blue screen with a stop code of C000021a. Is there a registry fix that can be booted on startup and fix it?

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  • wtcinnyc Nov 15, 2010

    Michelle,

    I have tried all your suggestions. It won't boot in safe mode, I have done a ssystem restore...one month back...no luck, I tried a system repair...no luck. All I can do is get to the bios and select which device to boot from. I believe I need a bootable registry repair and/or driver repair cd.

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Hi,
Welcome to Fixya Support
I am Michelle, and i will be assisting you regarding the issue
please restart the system and tap the F8 key on initial system logo.
in the advanced menu select the safe mode option.
login as an administrator
click start...in the search box type system restore
in the window that appears, restore computer to earlier date and time and click next
select a date may be a week or 2 back when system was running fine and click next
follow the onscreen steps

In case the above does not help and you are not bale to boot through safe mode as well, then i would suggest you to run a repair of the operating system
You may run a repair by booting through the operaring system disc. If you could share the operating syst5em version with me like xp, vista or windows 7 even i can share the steps with you.

You may also refer to the below link that has steps for running repair for different operating systems.

http://www.windowsreinstall.com/

please feel free to ask in case you have any queries.

Posted on Nov 15, 2010

  • Maanita Clive
    Maanita Clive Nov 16, 2010

    as you have mentioned that you have tried running a system restore. In that case it means you are able to access the windows desktop.
    if that is the case, you may download and run the below 2 tools.
    both the tools are absouktely free .

    CCleaner http://download.cnet.com/ccleaner/

    Combofix http://www.bleepingcomputer.com/combofix...

    let me know in case of any further query

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Posted on Jan 02, 2017

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Blue screen error STOP: c000021a {Fatal System Error} The windows logon process System process terminated unexpectedly with status of 0x0000005 ( 0x00000000 0x00000000). The system has been shut down.


It appears that your Windows Registry is corrupted. You can try to use a Registry repair utility like CCleane to fix it. If that doesn't work you will have to reload Windows OS (Operating System). For more info no this error code Google "c000021a".

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Tip

Windows 7 Startup Problems - How to Fix Windows 7 Startup Problems With Easy...


Windows 7 Startup Problems - How to Fix Windows 7 Startup Problems With Easy Tips

If you fail to boot the operating system, you can:
#1. Use Windows startup Disk to fix Windows 7 startup problem
If the failure of booting is result from the errors or the damaged files of starting system, a start up disk will help to solve this problem with ease.
#2. Use last know Good Configuration to fix Windows 7 startup problem
It is also a common method to enter the operating system. To use last know Good Configuration you can press F8 when you reboot the system. Then select "Last know Good Configuration" on the Advanced Boot Options screen to enter this mode.
#3. Use System Restore option in safe mode to fix Windows 7 startup problem
Enter the safe mode as the step in to last know Good Configuration in method #2. Choose System Restore option in System Tool in start menu.
If you find the startup process of Windows 7 very slow, we suggest that you should:
#1. Remove redundant programs in your booting items as many as possible. After finishing this action, the speed of startup can be improved by no less than 40%.
#2. Delete short cuts on desktop. The more icons on the desktop, the longer it takes to restart Windows 7. To fix Windows 7 startup problem, you should clear up the unnecessary short cuts on your computer desktop.
#3. Optimize registry regularly with proper registry maintenance tool. Registry error is the main reason that slows down the rebooting speed. You had better do registry cleanup timely to speed up Windows 7 start up process.

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Sony vgc RB 30-I was putting in a graphics card on Friday for a dual monitor-vision Tek 7K 64MB DDR VTKRad7K64P. it said in the spotty directions to remove previous drivers for my old video card- which I...


The errors in computers make it miserable for their users to use them. They face so many problems when computers do not perform as intended. A very common error, which computer users can face, is the c000021a fatal system error.
This error is produced when it found by Windows NT kernel that either of the two processes Csrss.exe or Winlogon.exe has failed. Such processes could have stopped working due to many reasons like misaligned files being installed on the PC and a faulty restoration of files at the place where they were being used. In the event of such a situation, the Windows NT kernel stops the system and the stop c000021a fatal system error message is produced on the screen. This kind of a fatal exception happens when the PC can't tackle an exception and the program showing it needs to be closed.
This kind of a c000021a unknown hard error can be resolved by uninstalling the software that is not as per the needs of your PC. One can remove all the unwanted files present on the PC. An upgrade of the PC's operating system is also an alternative to restore it to its working condition and fix the stop c000021a unknown hard error.
The second solution to fix c000021a error from your computer is also very simple. You do not need to feel much hassled because of it. Just restart the computer. When the computer is booted, press the F8 button. Choose the last known good configuration and then press enter. This error generally happens when some software or hardware has been installed that is not as per the specifications of the PC. Therefore, after selecting the operating system you want for booting, the C000021a error will have been removed from your system.
However, it is better to utilize a registry cleaner software when the error still does not go away.
Windows registry includes all the information that is used by this operating system for carrying on with any operations like creation of documents. Windows Kernel uses all this information for executing the applications.
Registry cleaner software can ensure that the registry is cleaned of all the bad entries which have been causing an improper execution of files by Windows Kernel. Using this software is one of the most effective ways to fix the c000021a fatal system error. It can clean the registry without deleting any useful items from it which can lead to production of further errors.

Fix C000021a Fatal System Error is easy to do with registry cleaner. If you Scan Your Computer it will detect all the errors in your registry and safely remove them.

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Click on my computer.
Right Click on the C: drive.
Choose Properties.
Tools tab.
Error checking: Check now.
Choose automaticly fix file system errors.
Start, Yes, OK, Reboot the PC.
On boot a blue screen will launch and run for 5 - 20 minutes.
It wll reboot into windows when completed.

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1 Answer

I have a problem on this cod c000021a fatal system error i have window when i shut down my computer show blue screen with this cod c000021a fatal system error and computer restarts i need help for solve...


Blue Screen system error. If you've been running windows Xp, please do the following:
1. Insert Windows XP CD in the Pc.
2. Restart the PC and while in Bios, go to Boot Priority and select Boot from CD as your first priority.
3. Save and exit.
4. The PC restarts and follow the instructions on the screen. (Press any key to boot from the CD).
5.After system has finished, such will happen <Enter-To Continue R-Repair ESC-Cancel>.
6. Choose R to repair.
7. A black screen pops up, just read and type 1 and wait for the next step (password).
8. Put in your Admin Password or press "Enter".
9. Then type CHKDSK and press "Enter".
10. the system will repair the errors within the HDD and windows and later restart the PC. Good luck

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Getting 0x0000008e is surely a signal that your registry is corrupted. What you need to do is to fix 0x0000008e as well as other registry errors to prevent your registry from total corruption. If you continue to run this damaged system and don’t fix 0x0000008e, this potential risk will bring you more troubles, Even system crash.

Cause of the problem would be.Mis-deleting registry entries, downloading dubious files, hard shutdown PC etc can also cause 0x0000008e.

Heres how to fix the issue

Download the software fix by clicking here.
Launch it after finishing the installation.
Click “Scan Now” button
Click “Repair Problems” button and fix 0x0000008e.

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hello there
here is some information that should be able to explain this error and how to fix it ok?
best regards michael
  1. How to troubleshoot a "STOP 0xC000021A" error ... presents advanced troubleshooting steps for the STOP 0xC000021A error. ... STOP: c000021a {Fatal ... Note Most STOP 0xC000021A errors occur because Winlogon. ...support.microsoft.com/kb/156669
  2. "STOP: c000021a (Fatal System Error)" Error! RE: "STOP: c000021a (Fatal System Error)" Error! Ya, thats what I thought I might have to do ... RE: "STOP: c000021a (Fatal System Error)" Error! just input the ...www.msghelp.net/showthread.php?tid=66202 - 52k - Cached
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