Have a older motherboard that was in a back closet. Iits been there ??? Hooked up up and nothing. Nothing works. Checked the power switch 3times have the book thatczme withit and following instructions will not fix issue. Can a great boardsit too long? I know sometimes they can fry something when started up sometime but its usially because something was shorting out. I checked the board real careful flr where the hold down screws are checked it 3 times too! Looks like a doa board. Anything else i can try??