Existe uma ferramenta chamada Display Driver Uninstaller - DDU que remove realmente todos os arquivos que cada instalação do Driver coloca no HDD quando o desinstalador oficial ainda deixa os arquivos ou quando os desinstaladores oficiais falham:
Display Driver Uninstaller is a driver removal utility that can help you completely remove AMD/NVIDIA/Intel graphics card drivers and packages from your system, without leaving leftovers behind (including registry keys, folders and files, and the driver store).
The AMD/NVIDIA/Intel video drivers can normally be uninstalled from the Windows Control panel, this driver uninstaller program was designed to be used in cases where the standard driver uninstall fails, or whenever you need to thoroughly delete Intel, nVidia or ATI/AMD video card drivers. The current effect after you use this driver removal will be similar as if its the first time you install a new driver just like a fresh, clean install of Windows. As with any tool of this kind, we recommend creating a new system restore point before using it, so that you can revert your system at any time if you run into problems.