You can change the X with your hard drive partition on your computer after you install Windows 10.
This is for the example of the default location of your Fallout 3 folder: Fallout 3: X: \ ProgramFiles (x86) \ Steam \ steamapps \ common \ Fallout 3 goty or it could be: X: \ Program Files (x86) \ Steam \ steamapps \ common \ Fallout 3. In your Steam folder, you have to look for the Fallout 3 folder, and click it immediately if you find it.Here is the first way you can try to play Fallout 3 in Windows 10: Every time you run a Fallout 3 on Windows 10, make sure that Windows runs with administrative permission enabled.
This includes if you have difficulty running Fallout 3 on Windows 10. If you have problems when playing a game on Windows 3, you can resolve it by running as administrative privileges. You Can Run Fallout 3 as an Administrator
