Generally speaking, it's not always a smooth transition when changing GPU manufacturers, as the drivers tend to leave remnants. A couple suggestions. Uninstall your current AMD driver, download CCleaner free, and run the registry cleaner Reboot Re-install current AMD drivers. Alternatively, uninstall your current AMD driver then download and run Display Driver Uninstaller to clean out the leftover nvidia and AMD drivers. Reboot Re-install current AMD drivers Admittedly I haven't used the current display driver uninstaller, but previous uninstallers made available at guru3d have always worked well for me. As always, YMMV.