Originally Posted by ultimate_fusion

I have a m2n32 Asus board.
I was putting my pc into another case and turned it on and the fan turned once and did nothing.

The light on the mobo is on.
I took the mobo out of the case and tried it and same thign happened.
I have took the ram and graphics card out so just the cpu and heaksink. The heaksink just spins once.
I shorted the power to get it on out the case. but still spins once.I have 2 psu's which both should work including the one I was using before i moved the pc into the other case which has been working for a while with the setup.
The same thing happens with both cpu's.

I have also reset the mobo and removed the battery.

I am out of ideas!! i hope its not the cpu. any suggestions or ideas or advice please help.

I have just disconnected the 12v 4 pin power from psu to mobo and the cpu fan works, there are no beeps and no video. my pc doesn't go when the 12v power is plugged in???

thanks in advance
UF

Originally Posted by timpati

i guess that either your psu is demaged or a broken device feeded from 12V line.

please try this: connect any load which draw a few amperes to psu outside. if psu does not reduce its voltage then you must connect cards (ethernet, VGA, sound etc.), RAM, HDDs and mainboard respectively. meanwhile, you must observe or measure 12V voltage of PSU. whenever its gone, you find its defective device. it seems RAM probably

Originally Posted by caperjack

perhaps because the 4 pin is shorting out the board or there is a short in the board