I have a ga-x58-usb3 motherboard. Last week the system would not post. My video card was starting with all fans running full force and would not cycle down. I swapped my 460 gtx for an old gts 8800. Problem fixed or so I thought. The problem reared its ugly head again last night with the 8800gts. By reseting the bios I was able to post and boot again. I don't have another board to try the components in. My question is how do I isolated the problem here. It still could be the video card that card is pretty old.