windows had a critical failure, now I have no video card?

as soon as I turned on my computer today, I got a pop up that Windows had a critical failure and would log me off in 1 minute, which it did. I had no cursor to turn off my computer, so I pressed the power button to turn it off. When I turned it back on, it booted up okay, but I could not see anything on my monitor. When I unplugged it, it displayed an auto test pattern, when I plugged it back in, it said it had no signal and went to power save mode. I got an old monitor and plugged it into my on board graphics. When I go to my device manager, it says I'm using plug and pray, and does not even list my actual graphics card. It is an ATI Radeon 3850.

I did just get a pop up that the ATI catalyst converter was not compatible with my current graphics adapter, so I don't know if that means something, or if ATI is just telling me it does not know what to do with on-board graphics.

I'm going to try now to download new drivers, see if that helps, but I'm afraid my graphics card is fried. Why would it all of a sudden do that? Yes, I had been playing Civilization III recently, so it auto switched to a lower resolution for that, but that should not kill my graphics card!