original title: Fatal System Error on Install of Security Essentials.
I installed Security Essentials and on reboot received the blue screen of death and got the error STOP: c000021a {Fatal System Error} The windows logon process system process terminated unexpectedly with a status of 0xc0000005 (0x0000000000 0x00000000). Can
anyone help?
1. Have you installed service pack 3 on the computer?
2. Which edition of windows XP are you using?
Verify if your system meets the minimum system requirements for security essentials.
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.
Troubleshooting steps provided might help you.
This article is intended for advanced computer users. If you are not comfortable with advanced troubleshooting, you might want to ask someone for help or contact Technical Support.
