PC turns on for a second then turns back off.

[themlglaw]

Hello, I built this PC about 9-11 months ago and this is the first ever problem it's had. If I put it to sleep or just shut it off, when I try to turn it back on it turns on for a second, as in all the lights go on, then it just shuts off, all the lights go off as well. I first noticed this two days ago and assumed it was nothing, but now it just happened again.

It usually takes me about 4-5 tries to turn it on. After it happened the first time I went out to get some utilities to clean it, and I just cleaned it. Immediately after I try to turn it back on after cleaning is when it happened the second time.

Does anyone have any idea why this would be happening?

 

[jimmysmitty]

It could be one of two things:

1. PSU has been going and finally went bad

2. Motherboard is going bad

I would say most likely it is number 1. What brand PSU do you have and what wattage?

 

[ValeTudoGuy]

It could also be a dodgy power button, is the button functioning correctly as in is it engaging and disengaging fully?

 

[themlglaw]

It could be one of two things:

1. PSU has been going and finally went bad

2. Motherboard is going bad

I would say most likely it is number 1. What brand PSU do you have and what wattage?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182200&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-

That's my PSU, not sure about the wattage.

 

[jimmysmitty]

It is a 630W PSU and Rosewill is ok for a PSU maker. The only way to test it is by using a known good PSU to see if your system powers. You could also use paper clips to jump the PSU to turn it on the a voltmeter to test each line (3.3, 5 and 12v) but that is only recommended for experienced people.