Quote Originally Posted by 'Las Vegas',index.php?page=Thread&postID=142797#post142 797
My graphic card is a 5 month old GeForce 9600GT, which I'm 100% sure isn't broken or anything.
I wouldn't be 100% sure if I were you. I was getting that same sort of flashing and artifacts and it was a bad video card. I had graphics rays shooting off into the distance, flashing textures, etc.

Check your fans, make sure they spin freely. Thermal damage can be avoided if you catch it early.