Open your Speakers/Headphones Properties and click on whichever speaker you're currently using. Once there, please perform the following:
- Go to the 'Advanced' tab
- Under 'Default Format', you'll see a dropdown for multiple different settings
- Switch this to '16 bit, 192000 Hz (Studio Quality)' if this is set to anything else
- Click 'Apply' and close these settings
- Restart your computer
- Open the Minecraft launcher and open the game
It should work properly now.
MRA