Hi, I'm running XP and my PC keeps randomly shutting down or restarting and I keep getting the same BSOD:

"A problem has been detected and Windows has shut down (etc etc)

Technical Information:
***STOP: 0X0000007E (0XC0000005, 0X804EF436, 0XBACFFA60, 0XBACFF75C)

Beginning dump of physical memory
Physical memory dump complete
Contact your system administrator or technical support group for further assistance"

It might be virus related, but I can't keep the machine on long enough to run a scan. I've switched off automatic restarting on system failure, and switched off error reporting. I had dumprep showing up in winpatrol but I think I've managed to kill it.

Any idea what I can do about this? Any help is hugely appreciated!