I have a Gateway GT5678 desktop that was working fine with no problems. yesterday I used it a few minutes and then left it on for a hour or so and then went back to it and it won't do anything the screen stays black. I tried shutting it off with the power button and restartiing and all it does is the power button lights up on the tower. I even put the recover disk in and tried restarting and it did nothing. I wonder if the harddrive went dead. I am no computer genius by no means so please give me your thoughts.