PC Shutting down - no overheating

[Danijelb]

Hi guys,

I need help because my pc is my workplace so I need to sort this out. My PC is shutting down by itself. It will usually go off within 5 min and then it will start powering on itself and shutting down immediately after few sec and it will do that all over again until I shut it down completely manually. What I tried is checking voltages and temperatures in BIOS, so while I was monitoring it shut down again within few min while I was in BIOS. When shut down cpu temp was around 72 degrees celsius. So I guess it isnt Windows problem either since the same happens when in BIOS. Any ideas what to try?

Motherboard: MSI H67MA-E35
CPU: Intel i3 2100
RAM: 2x2GB 1333Mhz
Graphic Card: Ati 6770

 

[zink1701]

Sounds like a faulty Power Supply, test the ram with memtest86 just to eliminate that.

 

[Guest]

Take the battery out and reset motherboard to its default settings. Remove all unnecessary components until you have just enough to boot to BIOS, then monitor behaviour. If stable start re-introducing components one by one.

 

[Danijelb]

It was PS, thanks!