Graphics Card Problem (Shuts down but Computer keeps running)

[Guest]

I've been running the following config for over 2 months.
Yesterday I had a problem during the middle of the game. The Video Card unexpectedly shut down.

Today I ran COD MW2 twice, each time the Video Card shuts down. Its only the video card, since I was talking on skype and that kept going even after the screen went blank.
The problem only happens when I start a game, everything else seems fine. Temps on idle are around 30-40 and ingame haven't gone higher than 50.

Just wondering if anyone knows what this may be.

Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz
Thermaltake Black Widow W0319RU 850W ATX 12V
ATI Radeon HD 5850 XFX
MB ASUS P6X58D PREMIUM 1366 R

 

[alyoshka]

Did you try to switch the power button of the monitor on and off and on after it did this?
Could be because of a power saving option and of course could be because of a driver switching it off.
Try uninstalling the drivers completely and clean sweeping it, then reinstall and see if it makes a difference.
Usually this happens after
1. Corrupt file in the driver
2. Windows auto updated a crucial file within the driver package
3. Capacitor on the card or the monitor blew up
4. Just some other related windows file gets corrupt.