Display Driver Uninstaller (DDU) is a free utility used to completely remove all traces of existing graphics drivers (NVIDIA or AMD) from your system. It's typically used to uninstall the graphics driver when faced with issues like error code 43 or poor gaming performance. DDU is completely safe to use if you follow the on-screen instructions shown by the utility. Once it removes the display drivers, you can manually install the latest drivers using the method shown above.