Posts Tagged "How to troubleshoot a “STOP 0xC000021A"

How to troubleshoot a “STOP 0xC000021A

Posted by sepak on Sep 8, 2009 in Windows errors | 0 comments

Today a client friend of mine walked in to my office that his computer kept restarting after he had returned from his trip..after resetting his machine to stop auto restarting..loo…the beknown blue screen of death showed up with this error..showing STOP: c000021a {Fatal System     Error} The Windows Logon Process system process terminated unexpectedly     with a status of 0xc0000139 (0×00000000 0×0000000) The system has been     shutdown.This is error occurs when either Winlogon.exe or     Csrss.exe fails. Usually due to: Mismatched system files have been installed. A Service Pack installation has failed. A backup program that is used to...