The STOP: c000021a (Fatal System Error) error occurs when the Windows NT kernel detects that either the Winlogon.exe or Csrss.exe processes have failed. When this failure happens, the Windows NT kernel stops the system and generates the stop error message. You have mismatched system files installed on the system.
How do I fix a fatal error in Windows XP?
Unable to boot into the Windows setup CD?
- Insert your Windows XP CD and restart your computer.
- Press a key to boot into the CD when you see the “Press any key to boot from CD” message.
- When you arrive at the “Welcome to Setup” message, press R to start the Recovery Console.
- Type in your Administrator password; hit Enter.
How do I fix error code stop?
Basic Fixes for Stop Code Errors
- Restart Your Computer. The first fix is the easiest and most obvious: restarting your computer.
- Run SFC and CHKDSK. SFC and CHKDSK are Windows system utilities you can use to fix a corrupt file system.
- Update Windows 10.
How do I fix fatal system error c000021a?
Depending on the cause of the fatal system error c000021a, restoring your system back to a period when it was working correctly may fix the error. However, this depends a great deal on what was actually altered, whether it was a software or hardware change.
What is Windows logon process error c000021a?
The Windows Logon Process system process terminated unexpectedly with a status of 0x0. The system has been shut down. The fatal system error c000021a occurs when the Windows kernel (which is an integral system component), detects that the Winlogon.exe or Csrss.exe services have crashed or stopped.
What does stopstop c000021a mean?
Stop: c000021a {Fatal System Error} The initial session process or system process terminated unexpectedly with a status of 0x00000000 (0xc0000221 0x001003a8). The system has been shut down. This thread is locked.
What is c000021a dooring the bootup sequence?
Some Windows 7 and Windows 8.1 users are encountering the Stop Error code C000021A dooring the bootup sequence. In most cases, affected users are reporting that the problem started occurring after they’ve updated their BIOS version. Fatal System Error C000021A
