This is part 1 of how i would solve this. Please do the following and then we will finish with part 2:
- Download driver cleaner here and install (but dont run yet) http://downloads.guru3d.com/download...t=745#download
- Download the latest driver from nvidia (but don't install yet) http://www.nvidia.com/Download/index.aspx
- Download PC Wizard from my sig and install. Open it and go to FILE< SAVE AS and save the text file to your desktop. Then copy that text to this thread. This will allow us to guide you to the right chipset driver.
ONce you have done this, we will continue.