Oh I see how its going to be .. Well let me tell you what I do know. I have the same problem on 2 different machines (different hardware all around) Machine 1 Win7 X64 PRof - GIGABYTE ATI Radeon HD6950 Machine 2 Win7 X64 Prof - Ati Radeon 6570
I have tried different Graphics Drivers. Both Machines are amd CPU Have Directx 9
I can give more detail but It will have to wait until I get home.