I have this really wierd freeze. It isn't a crash, it is just that the screen freezes and the game still goes on and I can still hear footsteps from the game and gun fire and the like.

I have to alt+tab and shutdown the game that way. I can play for about 5 min, the game runs fine when i do but then the screen freezes.

I just upgraded to Windows 10 and got the new nvidia drivers. It worked fine in windows 7.

I've tried reinstalling the game, I've done the core fix and I'm running in compability mode WIndows XP sp3.

I'm guessing that it's the drivers, mayby somthing with SLI since i have 2 Geforce GTX 760.

Fallout 3 does not run correctly with two GPUs in SLI. You will need to disable one of them when you play the game.

Well, I found the solution fro now. Reverting back to Windows 7.

And it runs perfectly fine sith SLI on Windows 7. Mayby there's a bug with it when doing it on Windows 10 since it's so new.

I probably should have tried turning one of before reverting but reverting was the better solution at the moment. Should have waited before upgrading.