Sorry to spam you folks.
As some of you know I had been having a hell of a time trying to get fallout 3 working. I did everything correctly but to no avail. Many STEP members offered great suggestions and ideas but nothing worked for me. So I gave up on fallout 3. Went to run Fallout New Vegas to record some footage for my next RP on youtube... Fallout New Vegas (which had been working a few days earlier) crashed on game load! lol Very upsetting.
I Rolled back from the 9/21/16 windows 10 update to the previous version:
Search "Update & Security", open "Recovery" and you can roll back to your previous update from there....
Fallout New Vegas works again... oh.. and now fallout 3 works.
Windows 10 did something crazy in the 9/21 update, at least regarding my system. Hope this can help some folks.
Edit: You can disable windows update if you need to.. I did.