This has been happening for the last couple of days. When I go to play Fallout 4 and the usual window appears showing the power armor helmet pops up. Naturally, I click to play the game, but instead of starting, exactly the same window is repeated. I tried to see the integrity of the file and uninstall it and then reinstall the game, but without any result. If anyone could help me, I would really appreciate it. Solved: https://appuals.com/fix-fallout-4-wont-start/ help me and fallout 4 now start without any problem.