Link to Patch Fix - http://bit.ly/1Nrhta3
How to Fix Fallout 4 Crashes & Freezes
To start the game on the computer must be running 64-bit version of Windows, and the video card supports DirectX 11. If your PC meets or exceeds the above configuration, you can begin to install the game. The main thing - to make sure that the folder where to install does not contain Russian letters. If you do not run "Far Cry 4", then the application should be included as an administrator. If you have all of these requirements are met - download and install the patch fix the link above.