It’s recommended to use DDU in the Windows Safe Mode.

Also, it’s recommended to exclude the DDU folder from your antivirus software. So you’ll need to install and run it on your Windows computer. Secondly, DDU will not work on a network drive. This is to ensure that Windows Update doesn’t interfere with the GPU drivers’ uninstallation. First, ensure that your system isn’t connected to the internet. While using DDU software is simple, but you’ll need to keep in mind a few things. This is why we will be highlighting the easiest way to use DDU without causing any harm to your PC. While DDU is undoubtedly a great tool to use, the various options and configuration settings it offers can confuse first-time users. Essentially, when you try and install a GPU driver after using DDU, it will be similar to a clean installation. However, Display Driver Uninstaller is designed to search and remove all residual files and folders, clean up the corrupt registry entries, and remove all traces of the GPU drivers. The default uninstaller leaves residual files on your PC. This guide will show how to uninstall GPU drivers completely using the Display Driver Installer (DDU) software. So when you install a stable driver on your PC, these leftover files will cause issues with the installation. It's worth investing in a toolkit that contains numerous tools you'll make use of when tinkering with your PC.This happens because the default uninstall tool still leaves behind a few files and registry entries. To remove and/or install a GPU, you'll need a Philips screwdriver. Download NVIDIA drivers (opens in new tab).Hit the links below to download and install drivers for a new NVIDIA or AMD card. Installing required driversīefore the GPU can be used for intensive workloads like gaming, you need to get new drivers installed so Windows and software can effectively communicate with the card. If the PC does not turn on or no signals get sent to the monitor, we'll need to double-check that all cables are connected correctly (both inside and on the rear of the PC), and the GPU is seated properly in the PCIe slot. After that, hit the PSU power switch and boot up Windows. Now, all you need to do is to plug in the display connectors on the rear of the case, whether they're DisplayPort, HDMI, DVI, or VGA. Source: Windows Central (Image credit: Source: Windows Central)

Display driver uninstaller guide