Open your root folder of fallout 3 then you would find a file named “Falloutdefault.ini” open that file, it should open it any text editor. 4) Now again run “Fallout3.exe” If it again crashes to desktop during the new game. Now after downloading again paste the file into the root folder of fallout. Fallout 4 is one of the ambitious games released by Bethesda Studios, after launching this game many players reported some issues and errors appearing on the game.