HELP!!!!! Fatal Sytem Error!!

[trublu]

Yesterday,while booting,I got a "STOP: Unknown Hard Error". Then the computer restarted automatically.I had to boot into safe mode to do my work.Today there was the same problem,but with a different message:

STOP:c000021a {Fatal System Error}
The Windows Logon System system process terminated unexpectedly with a status of 0x00000000 (0x00000000 0x00000000). The system has been shut down.


Please reply ASAP

[ravi_9793]

http://support.microsoft.com/kb/317189
http://support.microsoft.com/default...b;en-us;156669

[Rollercoaster]

check ur ram. most prob it has gone bad