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Error Message STOP:c000021a (Fatal System Error)

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  • Ramanlal Dec 13, 2008

    c000021a

  • killa101 Apr 15, 2009

    *Note i have an Acer Aspire One and it does not, i reapeat NOT have a disk drive so cut that out of your logic

    ok i press the power button and everything starts up usually the the windows xp loading screen the the screen goes blank for a few secs and the the "blue screen of death" ("Error Message STOP:c000021a (Fatal System)") comes up and then my computer restarts and does the whole thing over again and i have tried F8 AND EVERY option on it and the same blue screen STILL comes up and i dont want to buy anything and i dont know how you download somthing without getting past the blue screen and i dont want ANY of my files to be deleted

    please help anyone

  • klawlor Apr 23, 2009

    I was having trouble opening the internet so each time I powered up my INSPIRON 2200 I had to do a system restore. On this occasion however a blue screen poped up and will not go away; this is exactly what appears on the screen as below:

    STOP: c000021a {FATAL SYSTEM ERROR}
    The windows Logon Process system process terminated unexpectedly with a status of )xc0000135 (0x00000000 0x00000000).
    The system has been shut down.

  • the3crespos Apr 25, 2009

    when i go try to boot my laptop up it will apear normal at first then the windows loading screan comes up then a blue screan follows it saying fatal system error c000021a and under that it says The unhandled Exception in session manager system process terminated unexpected. The system has been shut down

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  • 352 Answers

Hi, satagoe, That error means there is a error in memory block c000021a

reinstall the operating system.





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Posted on Oct 20, 2008

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SOURCE: my laptop wont start the

plz give your motherboard make and model and the operating version

Posted on May 05, 2008

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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".

Feb 07, 2011 | Dell PC Desktops

1 Answer

I was scaning my computer with an antivirus program and it gave me the option to restore my computer to get rid of the issue it had and when it restarted it gave me this message: Stop: c000021a {fatal...


If this continues to happen you will either need to use System Restore to bring the system back to a time before this happened or reload the OS. If you can get to a dos prompt, try running chkdsk.

Jan 26, 2011 | Gateway GT4022 PC Desktop

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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.

Dec 19, 2010 | Sony VAIO RB30C (VGCRB30) PC Desktop

1 Answer

I have a dell desktop running Wondows XP 2000.


There are lots of possibilities like faulty ram or may be virus in the system or may be the windows file is corrupt try to repair the windows installation. or take the backup of system and the format the system

Jan 21, 2010 | HP Pavilion a1610n PC Desktop

2 Answers

STARTUP IS IN A LOOP, THEN:STOP:c000021a


In my experience, your computer's hard drive might be fried. I took a couple computer architecture classes and this seems to be the most reasonable answer. if I were you, i would find a computer technician just to be sure. Hope this helps, good luck
here are a few websites that might help
http://healyourchurchwebsite.com/2008/03/14/how-i-fixed-my-stop-c000021a-fatal-system-error-with-knoppix/

http://forums.techarena.in/windows-xp-support/771529.htm

Jan 01, 2010 | HP Pavilion a1610n PC Desktop

1 Answer

STOP: c000021a {Fatal System Error} .. 0xc0000005


The first thing you should do is back up the HDD, Remove the HDD from your Laptop, you find the lid that opens the HDD access slot under the laptop or ask someone who knows how. if available there are aftermarket 2.5 HD enclosures that lets you install the 2.5 in.hdd of your laptop via a usb. you can plug the usb to a desktop PC and backup your files. then reformat your hdd. reinstall the hdd to your laptop. replace your memory ram which causes the blue screen with a new ram, reinstall the OS.

Jul 07, 2009 | Dell Vostro 1510 Laptop Computer PC...

1 Answer

Blue screen of death.


Try re-seating the RAM (memory sticks) with the system turned off. Clean out any dust from inside the PC, especially on the CPU fan.

Mar 12, 2009 | PC Desktops

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