Thread: PC switch off itself

I have power supply with twenty pins but motherboard has twenty four pins and I place this cable of 20 pins in 24 pins and it works PC but after five minute PC switch off itself. My motherboard is gigabyte ga-ma770-ds3 rev2.0 and my power supply is 350 watt and phenom x4 processor. I didn’t understand why PC is switch off so please help me to solve this problem.

To solve this problem I think you must purchase new power supply. Something atx rev 2.2 or above with minimum of 450 watts. And your PC won’t switch off then.