Ok my problem is very similar to this one:
Please help weird pixels pattern crash (event id 6008,41 kernel power)
As far as I get similar patterns and crashes and so far is restricted to in game.
However whilst trying to find the problem I downloaded and ran Furmark, it did the same thing after around 10 seconds, but after rebooting I changed the resolution setting on furmark from the one I usually use, 1680x1050 to 1280x960 and it has been running for around 20 minutes now with no problems.
My graphics card is and XFX Nvidia 280GTX and the problems started the second time I rebooted after installing new drivers,I have since completely reinstalled the drivers and the problems are persisting. I took a DXDIAG but have no clue how to look at any of it but apparently attaching it to this makes my character count too large so I'll post it under here if possible.
Any help would be greatly appreciated