Hi Bob,
Out of curiosity, why do you think that PhysX might be a problem?
There seems to be some confusion over the role PhysX plays in SSE. Apparently, only the physics routines are used—for ship dynamics, etc.—and they run only in the CPU.
So far as I know, no use of PhysX is made in rendering in the GPUs—and, of course, it can’t run on ATI cards in normal circumstances.
Off hand, it sounds like a sudden hardware failure.
Vin_sun will have more advice and instructions for posting your Dxdiag.
Regards,
Marty