
The location where the sound's firmware is stored could be corrupted or some files might be missing.The essential components needed to play sounds on your Mac might not be loaded correctly.There could be a driver or firmware related issue with your Mac.The hardware component (like speakers or headphones) might not be working properly.

In this way, it would be easier for you to identify the problem and fix it quickly.

Part 3: What to do if Sound is Not Playing in Videos?.Part 2: Mac Solutions to Fix Sound Not Working on MacBook.Part 1: Why Is Sound Not Working on Mac?.
