Right click the Fallout: New Vegas or Steam icon on your desktop, then select Properties.You should try running your game or your Steam client in compatibility mode. Install the anti-crash or enhancing mod for your gameįix 1: Run your game in compatibility modeįallout: New Vegas may crash on your computer because of compatibility issues.You may not have to try them all just work your way down the list until you find the one that works for you. But don’t worry! Your crashing issue can be fixed … Try these fixes If your Fallout: New Vegas is crashing or closing when you’re in the middle of a game, you’re no doubt very frustrated. What usually happens is they just get thrown back to the desktop without any warnings. Recently we’ve seen a lot of Fallout: New Vegas players reporting that their games frequently crashes or closes.