1. You want to install the latest drivers
2. You never want to let Windows install any HW drivers.
So....
A. Turn off Windows ability to install Hardware drivers
http://www.tenforums.com/tutorials/8013-windows-update-
http://www.sevenforums.com/tutorials/82137-drivers-turn-off-automatic-driver-installation.html
B. Download latest drivers and GFE and install wherever you store downloads ... say D:\Download\nVidia
http://www.nvidia.com/Download/index.aspx?lang=en-us
http://www.geforce.com/geforce-experience
C. Disconnect ethernet cable or disable WiFi
D. Reboot and uninstall everything in Programs and Features that says nVidia on it.... Reboot
E. Install drivers and GFE
F. Shutdown, connect cable, Boot