Ok I have this motherboard. PC had been running fine and then just one day.. I turned it on. And it sounds like it is starting up and after about 5 seconds. All I hear is a single long beep code.. lasting maybe 20 seconds.. screen is black. Then it stops and starts the long code again. It's an award bios I believe and I saw no beep code like that.. I have seen other suggestions from people about the long beep code but I am at my wits end.. I have an intel dual core duo.. E6859 CPU.. this is what I have tried. Swapped out video card.. same issue. Swapped out Ram.. same issue. Finally pulled off heatsink on CPU cleaned it all up and put more compound on it.. (reason I did this was I thought maybe it was overheating since there was that pause upon startup..) STILL same issue. Tried other hard drives.. just to see it one crapped out. Same issue. Cleared CMOS same issue. All I really have left is power supply and I don’t think that is it. When I turn it on. All the fans and everything seem to be good. I can go out and try another one and then I have absolutely no idea.. there is never a POST.. just turn power on. One long beep.. black screen and nothing else. Anyone else have any ideas??