Won't power on for more then a second

Hya,

Ok well I've been having this problem for a while, where sometimes the computer won't turn on. Like I'll press the button and it'll flip on for a second and turn off, and then I have to sdet the switch to off and wait a few mins and try again, and keep doing that until it turns on. I tried swapping PSUs, HDs, Video cards, Optical drives, Floppies, PCI cards and even the mobo battery and still nothing.

Recently my ethernet adapter fried and all of a sudden it worked. Then suddenly tonight, it's back to it's usual except this time I just can't get it to turn on, it refuses to turn on.

I'm getting really desperate because I need the components in that computer for video editing and it's the only computer that can run a video editing program without it's guts out.

Help would be appreciated

(The mobo is a GA-8IK1100 revision 3)

 

Hey Enzo,

Are you absolutely sure it's not the PSU? It really sounds like the culprit to me, after that I'd assume the HSF isn't seated properly / has died and that the mobo's powering down to protect the processor.

There's a similar thread here

 

Hey Steve,


Well, if it was that wouldn't the computer never turn on? It ran fine yesterday and I was gaming intensively on it, temperatures were a bit high but the resolution was much higher then normal. I'll have to check out just in case.

Thanks

P.S. I keep remkindign and forgetting to send you an e-mail. I'll get one done this weekend

 

SHort Cicuit on one of the PSU out lines. Just trace some wires I had the same problem and it required reseting the circuit breaker.

 

Ok well I tried re-placing the cpu and putting some more oif that goo thing on it (I think I got more all over me then on the cpu.. but there was a decent layer on it) and same thing.

It's not coming from the PSU, I'm sure of it, I tried putting my PSu into multiple other computers and they all ran fine.

I'm starting to think it's the mobo that's gone bad

Thanks for the replies

 

Could it be the northbridge heatsink? Is it passive or does it have a fan?

 

It used to have a fan, then one of the fan blades broke, so I removed it and bought a big, tall copper heatsink for it that gets cooled by airflow from the radiator fan.

 

Ok well suddenly it powered on and is working somewhat normaly.

I'll bet you that when I turn it off tonight, and try to start it tomorow morning, it won't work anymore