Some users have reported that their having audio issues with their Chromebook. Either the sound is completely silent or it’s cutting in and out intermittently. There are a variety of problems that can cause this for both sound coming from the speakers and sound coming from headphones. If you’re listening only through the built-in speakers and not headphones then skip to Suggestion #4. Otherwise follow each step in order until your sound is fixed.
Suggestion #1: Make sure the headphone are securely plugged in.
Make sure you really insert and push the headphones in - until you hear the click.
Suggestion #2: Try a different set of headphones or earbuds.
Suggestion #3: The “close lid” solution.
OR, if that doesn’t work:
Suggestion #4: Check sound settings
Look to the lower right corner of your screen (see image below). There you will see a series of icons. Click on your account picture at the very right. A window will appear showing you information about your Chromebook. Make sure that the audio is at a high volume. If it’s muted, un-mute it. Also, make sure that the output is set to the proper destination:
Suggestion #5: Clear the cache
Clearing the cache on the Chromebook can resolve some audio issues. To clear the cache do this:
Suggestion #6: Disable all extensions.
The sound issues could be the result of a faulty extension. To solve this you need to disable all of them. Check if the sound now works. If it does then the problem was one of those extensions. Now you need to re-enable each extension individually while checking the sound between each enable. Once the sound breaks again you’ve found your culprit.