If you keep having issues:
nvwgf2umx.dll
Nvidia Drivers.
If regular uninstall methods don't work.
Uninstall, Restart Safe Mode, Run Cleaner Software (i.e. Display Driver Uninstall // Driver Sweeper), restart, install latest or betas
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Uninstall your nVidia Drivers from Control Panel (all)
Restart into Safe Mode
Run DriverSweeper
Restart
Install Latest Drivers
http://www.guru3d.com/content_page/guru3d_driver_sweeper.html
http://www.nvidia.com/Download/index.aspx?lang=en-us
If you have a BSOD on restart. Go back to Safe Mode. Go to System->Device Manager->Display Adapters Remove them, restart.
Safe Mode /w Networking will save the day
--- This is another popular tool, it's an alternative to DriverSweeper
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=display%20driver%20remover
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Glad it's working now though!
