Hopefully this is all you need now (note, if you have AMD chipset drivers, it will uninstall that as well, so it may not be the best solution if you're using an AMD chipset).
Otherwise, use this method:
If you're using the manual method, I also use Driver Fusion (reboot) and CCleaner for the registry after doing the express uninstall. Then I check for any remnants on my drive folders and registry (CCleaners for registry again, then reboot). Then I'm ready to install the latest drivers. This same method works great for Nvidia drivers.