Generally, Fallout 4 crashing error can be divided into 4 cases ( Fallout 4 keeps crashing, Fallout 4 crashing PC, Fallout 4 crash on launch, and Fallout 4 crash on Xbox One). Fix 8: Disable Antivirus Program Temporarily.Fix 5: Update Fallout 4 to the Latest Version.Fix 4: Check the Integrity of Game Files.Fix 3: Make Sure that Disk Space Is Abundant.Fix 1: Configure the Graphics Option to Low.Minimum & Recommended System Requirements of Fallout 4.