Bad MOBO or PS?

[tim844]

After two outages close together (UPS failed!) my computer would not boot and had a flashing green light in front and on the power supply. After researching the problem online, including this forum, I unplugged everything, plugged in power and got a steady light. I plugged in just the motherboard to the PS and got the flashing light. That suggested a fried mobo.

I bought a new one, plugged it in and got the same flashing light.

Now what? Is really a bad PS and I wasted my money on the mobo or is there a chance that the new board is DOA?

Old mobo: MSI 945P Platinum

New: ASRock P45TS

Thanks,

Tim

 

[Blazer]

when these kind of problems arise and end users come to sites such as these for help they really need to post ALL system specs, and should never have to be asked for !

 

[Blazer]

when these kind of problems arise and end users come to sites such as these for help they really need to post ALL system specs, and should never have to be asked for !

 

[RebateMonger]

If you suspect a failing power supply, it's best to test or replace the power supply first before installing a new motherboard. A bad power supply can damage a motherboard and any new motherboard you plug into it. I've seen it happen.

You need to test that old power supply, and not on another motherboard. I use a $25 digital power supply tester that reports all the voltages on an LCD display.

 

[tim844]

Blazer, you are certainly correct that I should have posted more details.

It turns out that it was a bad power supply (I may have to get one of those gizmos - very cool). My lesson I take from this experience is that a steady light on the power supply isn't necessarily evidence that it is working properly. It needs to be tested. Since I never powered on the mobo it didn't damage it.

Thanks for the help.