Usually, the Windows Control panel's AMD/NVIDIA video drivers can uninstall. The Display Driver Uninstaller (DDU) 18 program was designed to be used in cases where the standard driver uninstalls fails or when you must thoroughly delete NVIDIA and ATI video card drivers.
After using this driver removal tool, the current effect will be similar to the first time you install a new driver, just like a fresh, clean install of Windows. As with any tool, we recommend creating a new system restore point before using it to revert your system if you run into problems.
If you have a problem installing an older or newer driver, try it, as there are some reports that it fixes those problems. DDU is an application programmed by Ghislain Harvey, aka Wagnard; in our forums, Guru3D.com is the official download partner for this handy application.