Report "I have the Gateway Dx440x desktop with windows 7. It has a nvidia geforce 8500gt video card. It use to work fine but after some time, the computer would restart while running a game or other graphics intensive progams. the problem that i require a solution for is that, now when I start the computer there is no signal on the monitor. I had to unplug the card and use the onboard intel adapter. what can I do?"