Originally Posted by The Good Guy

eeiiiiaachaa. you've been far to hasty my friend. what makes you think it's the mobo? what you should do for your friend is use your own computer to test some off his hardware.
I'd say it has something to do with the power switch but you don't want to test that till you go through the basics.
he's not a gamer!? might i recommend you sell/trade all the hardware, including both psu's on craigslist. his computer could be bartered for as low as 100$.