"nutso fasst" wrote in message .com...
After posting I removed all boards and drives and restarted. System ran for
about an hour without shutdown, so I tried another video board. System shut
down again after some minutes. Took out video board and ran it again with
nothing attached. This time it shut down after about 10 minutes. This
morning I reinstalled boards, reattached drives and restarted to check
e-mail. System still running after five hours, CPU @ 52C, system @ 46C.
Maybe it'll run another three years if I don't turn it off... oops,
forgot... still haven't installed the new HDD...

nf
Possible causes:
1) Virus infected.
2) Inadequate power supply unit.
3) Temp sensors have become a bit jerky and give a higher temperature
than the actual for a few secs, which causes system to shutdown. GO to
bios and disable the option shutdown on overheating.