Computer turning off and on

[Slim2000]

Hello everyone, i have a problem with my PC i've never came across before and i've tried everything and i still can't solve it. My PC turn's off by itself while i'm working on it most of the times it turns right back on, i thought it was the cmos battery, i changed it still was doing it, then the power supply came to mind since i have alot of hardware in my tower with just a 300 watts power supply, so i changed it to a new 500 watts power supply still does it, i've reformat my hard drive and it still does it. What else can i do? Have anyone else had this problem?

[Ridlyn]

What are the amps on your power supply. Also checks the risers on the motherboard it could be shorting out your motherboard just enough to get it to restart.

[Slim2000]

i had a 300 watts on it before changed it to 500 watts still does it.

[plant]

check in my computer, under advanced or something as i remember. theres an option saying 'restart on error' and the box is checked by default.

[Ridlyn]

Originally Posted by Slim2000

i had a 300 watts on it before changed it to 500 watts still does it.

I know but what are the amps on your new psu. It's not all about watts.

[Slim2000]

dunno the amps on the power supply it doesn't say all i know it's a 500 watts atx12v v2.0 don't know if that helps.