After installing the Dark Void demo (which was mediocre at best), i couldn't play any other PhysX game (MassEffect2 and Batman mainly). I was getting a message that i needed to update PhysX drivers, which i couldn't since Dark void installed the last one! The solution came when i discovered the repair function of Physx drivers -which in fact HELPED! I never had any help from all those repair functions all those years!!! But the demo messed up the drivers....
Raving stop.
Those were my 0.02...

Raving stop.

Those were my 0.02...