5.5 How do I clear the cache in Fallout 4?.5.4 How do I run Fallout 4 as an administrator?.5.3 What do you do if Fallout 4 won’t start?.5.2 What do you do if Fallout 4 won’t start?.5.1 How do I fix my Fallout 4 from crashing?.5 FAQ Fixing Fallout 4 Crash on StartUp.