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No microphone on your Mac? Check the input device first

Most 'my Mac can't hear me' problems are the wrong input device selected after a call, a headset pairing or an external display was plugged in. The fix is a settings check with a live level meter, not a reset.

  • Difficulty Easy
  • Estimated time 5 min
  • Platform macOS
  • Last updated
No microphone on your Mac? Check the input device first — schematic diagram

Before you start

Low risk. This change is reversible — you can return to the previous state without professional help or data loss.

Steps

  1. Open System Settings → Sound → Input and select 'MacBook Microphone' (or the mic you expect to use)
  2. Speak normally and watch the input level meter — it should move as you talk; if it doesn't, pick a different input device from the same list
  3. Make sure the input volume slider isn't at zero (it sits under the device picker on some macOS versions)
  4. Record 10 seconds in Voice Memos and play it back — that's your proof the mic is live before you trust it in a call app

How to verify the fix

The input level meter moves as you speak, and a test recording in Voice Memos plays back with your voice.

If this didn't fix it

No input device appears at all — likely a hardware fault; stop cycling settings and try an external USB microphone to confirm before assuming the built-in mic is dead.

Next stop: the related fixes below, or start a guided diagnosis.

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