You probably just popped a cap or two on that Abit. That's normal. Take a look around the board, see if you can identify the bad caps. But sometimes they just go bad without leaving any proof behind. Anyways, you can replace the caps pretty easily. It's just the price you pay for running an Abit. I have the URL to a site that will repair your board for you, or sell you the correct caps so you can fix it yourself. If you'd like that URL, I can dig it up for ya later.
