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BSOD / fatal system error a few seconds after login to XP

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(Follow-up from initial thread: http://www.geekstogo...r-t270099.html)


I repaired my Windows XP installation with the Windows XP Service pack 2 OEM CD sent by Dell. I am able to boot normally and get to the login screen. When I log, I can see my desktop items, taskbar, tray icon appearing but after a few seconds, I get a BSOD (blue screen of death) with the following error:

Stop: c000021a {fatal system error}
The windows subsystem system process terminated unexpectedly with a status...

Same thing happens when I login into another new account I created in Safe Mode.
My machine also reboot when I try shutting it down from the login screen.

I did get a few clues about that error from the following link:

I went to Safe Mode and was able to:
. run my antivirus (no virus detection)
. run MalwareBytes' Anti Malware (which detected two suspicious files that it removed)
. After running the Anti Malware, I repaired XP again.

Any idea what could be wrong and how I could fix this? Any utils I could run in Safe mode/Command line to detect what is wrong?

Though I was able to save most of my files to a USB drive, I would prefer fixing the current OS rather than going through a full reformat/reinstall. But if you feel the later option is better, than so be it :).

Thanks in advance.


Edited by fargaud, 04 March 2010 - 11:29 AM.

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This is for advanced users apparently, but check this out: LINK

Try the second tip first.. Last Known Good Configuration.
  • Restart your computer, holding or tapping F8 repeatedly, until you hear a beep, or get to the Advanced Options menu.
  • Scroll to Last Known Good Configuration, Enter.

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