I have a problem with a desktop - it restarts occasionally (but without freezing). This behaviour is non deterministic - sometimes the machine works for hours while otherwise it restarts just after the windows starts up.
I tried reinstalling the system but without any help.
I was considering the power supply failure but the power supply was replaced recently with new one (unfortunately I can't recall whether it was before or after the problems occured).
Do you superusers have any ideas? I will appreciate any clues on how I can diagnose the problem (even, what can cause such problems).
Thanks in advance.