Installing NVIDIA GPU Drivers without display output

1. Download NVIDIA drivers and extract NVIDIA Installer content with 7-Zip or WinRAR to a folder and name it NVIDIA then move that folder to the root of your external drive that you are going to attach to the computer w/o display output.
2. After booting up the computer and getting to desktop, Press Win+R and type cmd then press ENTER.
3. Press Ctrl+G then press ENTER, you should hear a ping sound that means you opened command line successfully.
4. Type X:\NVIDIA\setup.exe -noreboot -clean -noeula -nofinish -passive
   where X is your attached drive letter. if the computer has only one partition/drive, replace with D, if the computer has 2 partition/drive, replace with E. and so on.
5. After few minutes you should get display output, if that doesn't happen then repeat from step 2.