Well the debugger states that it's an issue with your driver. \SystemRoot\system32\DRIVERS\nvlddmkm.sys
I know you said that you tried multiple versions but maybe it's having a conflict somewhere. I suggest trying to uninstall the driver again through Device Manager (Right-mouse click on video card and select Uninstall). Restart your computer and let windows do its thing.
Then navigate to Drivers | GeForce to get the latest supported drivers.
If that doesn't work then you might have to run Driver Sweeper to remove all video drivers that may still be present and try again. Let us know what happens.
My Computer
Computer Manufacturer/Model Number
Me
OS
Windows 7 Pro x64
CPU
Intel Core i7 920
Motherboard
ASUS P6T Deluxe V2
Memory
Corsair XMS3 12GB (3x2GB) DDR3 1333
Graphics Card(s)
EVGA GTX 470 1280MB GDDR5 DX11
Monitor(s) Displays
ASUS VW246H | ACER AL2216W
Screen Resolution
3600x1080
Hard Drives
1x Corsair Vertex 3 SSD (120GB)
1x Corsair Vertex 2 SSD (60GB)
2x Western Digital Black (500GB/1TB)
1x External WD Green eSATA (1TB)
This is a classic TDR116 error which is typically caused by your display driver following a defect in your RAM/GPU. Firstly stop any overclocking if any, reinstall your Nvidia software package but make sure only the Display Driver and PhysX are selected, make a clean driver install.