See this thread for more details:
My guess is that you are using an unsupported GeForce card and either Windows or NVIDIA has done an automatic driver updated that you are unaware of. Most in that thread say the solution is to install the latest driver, go back to an older driver, or turn off an anti-aliasing setting. See the thread for details.
I hope this helps,
I've got it working smoothly now, needed to delete one of the latest updates. Thanks a lot alot for the help for the help, I can continue with my uni work now!