How to obtain error logs for Blizzard games
What to do if your game doesn't launch after clicking Play.
Troubleshooting damaged installation files for SC2
What to do if you can't open the Battle.net desktop app, and there are no error messages when you try.
Troubleshooting issues with your game settings changing back to default when you log back in to the game
The video cards supported for use with Cold War and Modern Warfare
Troubleshooting steps for performance-related problems.