Test regesters that the physx driver is working, perfectly fine ( using the StarTalesBenchmark)
shows the drive is installed correctly....
Lets put some states up then see if this has anything to do with it:
Intel(R) Core(TM)2 Quad CPU Q6700 @ 2.66GHz
NVIDIA GeForce GTX 280
Memory (RAM) 8.00 GB
Manufacturer XFX78I
Model XFX nForce 780i 3-Way SLI
Total amount of system memory 8.00 GB RAM
System type 64-bit operating system
Number of processor cores 4
Graphics
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Display adapter type NVIDIA GeForce GTX 280
Total available graphics memory 4095 MB
Dedicated graphics memory 1024 MB
Dedicated system memory 0 MB
Shared system memory 3071 MB
Display adapter driver version 8.17.11.9562
Primary monitor resolution 1920x1200
DirectX version DirectX 10
GPU processor: GeForce GTX 280
Driver version: 195.62
PhysX 09.09.1112 NVIDIA PhysX