On Steam, you can analyze your game data to search for some corrupted or missing data in it. Now, you can start the client and from there open Fallout 4.Once in the Task Manager, select the Steam process and click on the button End Task.Windows will ask you for admin rights, click on Yes.Open the Task Manager pressing the keys Ctrl + Shift + Esc.You can try to end the steam process from the Task Manager. When this game launcher ran into some error or problem, it may get stuck in a state where it can open any game. When Fallout 4 doesn’t want to start, some reason could be the Steam client. In this post, I want to show you some of the tips and tricks that you can try to fix this issue on your PC quickly and continue enjoying this fun game.