Macbook Pro Microphone
Macbook Pro Microphone

When the microphone on your MacBook Pro isn’t working, it can disrupt video calls, voice recordings, and other audio activities. Don’t fret! Here’s a systematic guide to help you troubleshoot and restore your MacBook Pro microphone to its full functionality.

1. Basic Checks

Hardware Inspection

  • Ensure no obstructions or dirt are blocking the microphone.
  • For those using external microphones, check if they’re properly connected and recognized by the MacBook.

Volume Settings

  • Click on the Apple logo > ‘System Preferences’ > ‘Sound’ > ‘Input’.
  • Make sure the input volume is not muted or set too low.

2. System Preferences

Sound Settings

  • Go to ‘System Preferences’ > ‘Sound’ > ‘Input’.
  • Select the appropriate microphone from the list (internal microphone for built-ins).

Privacy Settings

  • Navigate to ‘System Preferences’ > ‘Security & Privacy’ > ‘Privacy’ > ‘Microphone’.
  • Confirm that the app you’re using has permission to access the microphone.

3. Software Solutions

Restarting Core Audio

  • Open ‘Terminal’ and type: sudo killall coreaudiod.
  • Enter your password when prompted. This will restart the core audio process.

Updating MacOS

  • Sometimes, the issue might be a known bug fixed in the latest OS update.
  • Go to ‘System Preferences’ > ‘Software Update’ and install any available updates.

4. Third-party Apps Conflicts

Check Apps Settings

  • Some applications have their own audio settings. Ensure the correct microphone is selected within the app.

Close Conflicting Apps

  • If multiple apps are trying to use the microphone simultaneously, close unnecessary ones.

5. Resetting PRAM and SMC

Reset PRAM (Parameter Random Access Memory)

  • Shut down your MacBook Pro.
  • Turn it on and immediately press and hold the ‘Option’, ‘Command’, ‘P’, and ‘R’ keys together for about 20 seconds. Release and allow the computer to boot normally.

Reset SMC (System Management Controller)

  • For non-removable batteries: Shut down the MacBook > Press ‘Shift + Control + Option’ and the power button simultaneously for 10 seconds > Release and power on.
  • For removable batteries: Shut down the MacBook > Remove the battery > Press and hold the power button for 5 seconds > Replace the battery and power on.

6. Test in Safe Mode

Boot into Safe Mode

  • Restart your MacBook and hold down the ‘Shift’ key until the Apple logo appears.
  • This mode loads only essential software, so if the microphone works here, the problem might be related to third-party software or extensions.

7. Seek Professional Help

If all else fails, there could be a hardware issue.

  • Schedule an appointment with the Apple Store or an authorized service provider for further inspection and possible repairs.


A non-functional microphone on your MacBook Pro can be a minor hiccup in your workflow. By following this comprehensive troubleshooting guide, you’re well on your way to resolving the issue. However, don’t hesitate to seek expert help if the problem persists.

Eric Chan

Hi! I’m Eric and I work on the knowledge base at  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at if you want to see a topic discussed or have a correction on something I’ve written.

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