Cpu overheating due to power supply?

[chowks]

I have been having a few strange issues with my PC and was hoping someone might be able to shed some light.

Very occasionally it will not boot up. I turn it on, the lights and fans come on, but nothing is displayed on the monitor. To fix it, I usually turn the power supply off and on, and it works again with no issues.

This morning it had the same problem, so I tried turning the psu off and on again. After a few attempts it showed the bootup screen, but then a message saying "CPU over temperature error". I then went into the bios and it showed the cpu temp at 98+C! The PC has been off all night and doesn't feel hot, so I'm thinking this must be a misreading. After about a minute in the bios the PC turns itself off.

Here is a pic of the bios showing the settings, if that helps. I'm wondering if maybe this is a dodgy power supply problem? The PC is at least 5 yrs old I think.

Thanks for any help you can give

 

[chowks]

Hmm okay. It's strange because the PC normally works perfectly with no overheating issues, but will then just occasionally throw this wobbly. The PC wasn't self built but from a reputable custom build company, so one would assume the cpu cooler was fitted properly. Maybe it's come loose...

 

[chowks]

I think I've (temporarily) solved the issue.

I pushed the cpu cooler power cable slightly to make sure it was on properly. Turned it on and then heard a swoosh of what sounded like water rushing through the cooler. Temps are back to normal.

Thanks for your help. I should've tried this from the beginning!