Wont POST unless I unplug/replug power supply connector?

[crazychicken]

A friend of mine gave me a motherboard from an e-machines computer. The only "model number" i can find on it is "Imperial GV". I stuck it in a case wiith 1 stick of ram and a power supply (and a chip and hsf of course!) And it turned on and seemed to work beautifully!

Then i turned it off (with the power switch) and tried to turn it back on. The power supply turned on, but nothing else did. So i turned off the power supply (with the switch on the back), waited a bit, turned it back on , and again the thing booted normally!!

Whats up with that? It was not just a fluke thing, i can do that cycle every time.

Someone said to check if the bios gets reset everytime this happens - it does not.

Any suggestions??

Thanks,

crazychicken

 

[Horsepower]

I used to have an Intel D875PBZ that would act funny like that if I HAD to turn it off with the power switch, but if I shut it down through the OS it was fine.

 

[marksol5]

Sounds like a classic case of bad caps on that mother board

 

[crazychicken]

I replaced the power supply and it seems to work now... anyway to check the caps?

 

[Skraeling]

To paraphrase "you had me at, e-machine".

Visually look at them, any bulging/leaking etc.