I have what I thought to be a perfectly operational graphics card until recently when it started to majorly malfunction during one game, Arkham City.
The malfunctioning starting when I was about 15% into the game, I didn't have one issue before that (about 5 hours of game time). What happens is the game locks in random areas after 3-10 minus of play, if I attempt to alt-tab or ctrl-alt-del it will most likely flicker a few times then BSOD.
Smetimes it will go to jthe desktop successfully and generally there will be corruption of some kind on the screen until I restart the computer.
Since this started happening I have changed video card drivers several times, reinstalled my Wndows 7 operating system completely, pulled apart the video card, reapplied thermal compound and cleared it of dust. For some time I thought it was temperature. I did get up to the low 80's during gameplay. But after forcing the fan speed to 80% and seeing it crash at 45 I decided that wasn't the problem.
Obviously the likely event is that the card is dying, however I thought since it's only occurring in one game it could be a power supply issue, which has happened to me before.
Any thoughts would be appreciated.