i have been having this problem for awhile. i have tried getting a new disc, reinstalling the same disc, nothing helps. i have also been told that with my graphics card i have to disable a setting. i am not sure how to do this and i cannot find anybody who can. these are my specs
Windows 7 Professional 64 bit
intel core i5 3.20 ghz
8 gb ram
NVIDIA GeForce GTX 460
if somebody could help me with this problem i would be very greatful.