hey mate i had the problem with the game, im using a 4870, 10.3 cat. on windows 7
I thought i had the memory on my athlon x4 up too high and so i put my cpu to standard, it still did it, i couldnt even load the menu before it would grey screen and restart my pc. I found that by disabling all my sound devices bar the main sound output device (realtek) my problems have gone,, all i get now is a random closedowns and back to desktop (which is normal for this buggggy game), but nothing as bad as the pc resetting.