sarahcat1: Another thing that I sorta stumbled upon: if you do the following, you should be able to play it via GOG Galaxy instead of having to go to the Program Files (x86) folder:

1. Go to your Fallout 3 page in your GOG Galaxy 2.0 library (not sure how it is in GOG Galaxy 1.0, so just wanted to be clear).

2. Click on the Configure icon—the one with two dots, each connected to a horizontal line.

3. Go to Manage Installation > Configure, and checkmark "Custom executables / arguments" and make a new argument.

4. Under File 4, select C:/.../Fallout3.exe.

5. Click on "Default executable".

Now GOG Galaxy should open up Fallout3.exe instead of FalloutLauncher.exe when you click "Play".

Not sure if this will help anyone; all I know is that it made it work for me, in addition to the solutions stated before this comment.

Good luck, everyone!

wdluense3: Do you have anything related to FO3 in your Documents > My Games folder? If you have a Fallout3 folder in My Games you should either back it up and/or delete it. Once it is deleted I need you to start FO3 from FalloutLauncher.exe, then go to Options and set everything to what you want. Make sure that your Resolution is listed and set to the correct one. Once you have the graphics set to what you would like, hit OK and then hit PLAY. If you have any more problems let me know.

cryhwks: Intel(R) UHD Graphics 630.

And I had it on Steam first. But i uninstalled it when I returned the game. I don't know what GFWL is? Or where to see if it's still therre?

I'm not computer smart. That's why I was happy to hear this game worked right outside the box.