random reboot - boot area damaged

[pinesbrook]

Hello all, thanks for any help you can provide.

I have a problem where my pc suddenly reboots for no (obvious) reason. It can even happen when no non-system software is running and no one is even near the pc. There don't appear to be any foreign malicious programs running i.e. in msconfig startup or at any time via crtl-alt-del.

The clue to this mystery I can't solve is that once the reboot starts, scandisk starts and has to repair the boot area of the drive - every time.

I hope someone can help me solve this increasingly frustrating problem. Thank you so much.

 

[Jakman]

Sounds like a CPU heat problem.

 

[pinesbrook]

The heating fan appears to be working, i.e. I can feel a little cool air coming out the fan. Any advice on how I can troubleshoot to prove that that is indeed the problem, and what steps to take after? Thanks again.

 

[edfair]

Are you checking the power supply cooling fan or the processor cooling fan?

Ed Fair
Any advice I give is my best judgement based on my interpretation of the facts you supply. Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[pinesbrook]

On double-checking that, the lower fan which I assume to be the CPU fan seems to be working very strongly. The upper fan which must be the power supply fan is a little weak at least in comparison to the other. A little bit of air coming out...is that normal or indeed potentially the source
of my problem? Also, curious to learn technically how the reboot corrupts the boot area of the disk, if anyone can explain to a novice. Thanks...