sometimes you just get a bad driver installation.
As a first quick step you can try just running the driver installer for your graphics again, you can track it down here. Drivers - GeForce
If a reinstall over what you already have doesn't clear it up you'll need to go the long way....
Do download a fresh copy of the driver even if you have one already.
after removing the nvidia display driver normally in program and features, follow up with this program. Phyxion.net - Driver Sweeper
in Safe Mode
(you want it to pull the nvidia display drivers only. it will give multiple options.
After doing that reboot normally and then reinstall the driver. You also have mixed cards I noticed so you may want to make sure physx isn't screwing up somhow.