I was playing witcher. The game froze up my computer so I turned off the computer. And after some time I start the pc I got a one beep from the computer then I took the video card out and dusted it and put it back in. After some time when witcher played ending role this problem occur again, I took out once again video card from pc, this time I did not dust it and stud back in and everything was fine. I turned out the pc when I try to start it again so it sends a one long beep only.