Remove old driver in SAFE MODE.
Download latest driver from nVidia.com.
Install latest driver.
If failure, try next earlier version of driver from nVidia.com.
BTW, what is your computer make and model?
What is your the maximum Wattage on your PSU and how old is it?
whenever I try to install my new graphics card GEforce 5500 i try and install drivers half way through the install the screen goes blank for a few seconds then the computer reboots and then it still looks for the driver when i start the computer back up im running amd duron 750 processor any help would be appreciated thanks