This is the most common and effective first step. It scans your game installation and automatically fixes any missing or corrupted files.

Check logs for clues

Now try running the game. This is the single most effective fix for Windows 11 users.

Right-click on and select Properties . Click on the Installed Files (or Local Files ) tab. Click Verify integrity of game files .

If you are trying to launch Call of Duty: Black Ops II and getting hit with a "Sound bank failed to load" crash, you are not alone. This is a common error that usually happens on PC setups running modern versions of Windows. It indicates that the game engine cannot initialize its audio library or access its .sabs and .sabl audio files.

If the game loads but has no voice lines or music, the official audio redistributable may not have installed correctly.