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No Sound on Mac? How to Fix Your MacBook Speakers

Last reviewed · fixmic team

Silent speakers on a Mac are rarely a hardware failure. macOS silently reroutes audio more than any other OS — to a disconnected Bluetooth device, an old AirPlay target, or a monitor's speakers — and that's the cause in most cases. A few other culprits: something is muted, the sound effects output is set wrong, or Core Audio (the process that drives all sound) has hung. Here's how to check each, in the order most likely to bring the sound back.

Your Mac is probably playing to the wrong device

Hold Option and click the speaker icon in the menu bar (or click it normally, then the arrow next to the volume slider). A list of every output device drops down — internal speakers, headphones, AirPlay devices, Bluetooth. Pick your actual speakers. macOS often keeps playing to a Bluetooth speaker or a monitor's speakers after you disconnect.

1. Select the correct output device

AirPlay receivers, Bluetooth speakers, and external monitors with speakers (HDMI/USB-C) all register as audio devices. If macOS is still routed to one of them after you've left the room or unplugged it, your Mac's own speakers stay silent.

  1. Menu bar volume icon → choose Internal Speakers

    Click the speaker icon in the menu bar. Under 'Output Device', select your Mac's built-in speakers (or your actual headphones/speakers).

  2. System Settings → Sound → Output

    Open Sound settings for the full list. Select the correct device and check the output volume slider isn't at zero — watch the bar move as sound plays to confirm you've picked the live device.

  3. Turn off automatic device switching

    System Settings → Sound → Output, and on models that support it, turn off automatic switching if it keeps jumping back to a Bluetooth device you're no longer using.

2. Clear every mute and volume trap

Sound can be silenced in more places than the menu bar slider. Any one of them is enough to make speakers look dead.

  1. Check the mute key (F10) and volume keys

    Look at the top-right of the menu bar for a mute icon (a speaker with a line through it). Press F10, or Fn+F10 on some keyboards, to unmute; F11/F12 raise volume.

  2. Check per-app volume, not just the system slider

    Some apps (Music, Spotify, browsers) have their own internal mute/volume control separate from the system slider. Check the app itself, not just macOS.

  3. Confirm output volume in System Settings → Sound isn't at zero

    The menu bar slider and the one inside Sound settings normally match, but they can occasionally desync after a sleep/wake cycle. Check both.

3. Check Bluetooth and AirPlay routing

Wireless audio is the single biggest cause of 'my Mac has no sound' reports — the Mac is working perfectly, just playing to a device that isn't in the room.

  1. Menu bar Bluetooth icon → disconnect old devices

    If AirPods, a Bluetooth speaker, or a car kit that's out of range is still shown as connected, macOS may route audio there and silently drop it. Disconnect it from the Bluetooth menu.

  2. Check for an active AirPlay session

    Menu bar volume icon → look for an AirPlay icon or a device name under Output. If a TV or HomePod is selected, audio never reaches your Mac's speakers.

4. Restart Core Audio

Core Audio (coreaudiod) is the background process that drives every sound on macOS. If it hangs — often after a sleep/wake cycle or an app crash — every app goes silent with no error, and it looks exactly like a hardware fault.

  1. Open Terminal (Cmd + Space, type 'Terminal')

    Copy and paste this command and press Enter: sudo killall coreaudiod. Enter your Mac password when prompted.

  2. Wait for it to restart automatically

    macOS relaunches Core Audio within a couple of seconds — you'll often hear a faint pop as it comes back. Play a sound to confirm.

5. Reset the SMC (Intel Macs) or restart fully (Apple Silicon)

On Intel Macs, the System Management Controller manages audio hardware alongside power, battery and thermals. A stuck SMC state can leave the amplifier or codec unresponsive.

  1. Intel Notebooks (MacBook Air / Pro)

    Shut down the Mac. Press Shift + Control + Option on the left side of the keyboard, then press the Power button. Hold all four for 10 seconds, release, then power on.

  2. Intel Desktops (iMac, Mac mini)

    Shut down, unplug the power cord for 15 seconds, plug it back in, wait 5 seconds, then power on.

  3. Apple Silicon Macs (M1/M2/M3/M4)

    There's no separate SMC to reset. Shut down fully, wait 30 seconds, and turn it back on — this performs the equivalent hardware reset automatically.

Still no sound on Mac?

If the right device is selected, nothing is muted, wireless audio is ruled out, and Core Audio has been restarted:

  • Test headphones in the headphone jack, if your Mac has one. If they work, the built-in speakers or their internal wiring are the fault — a repair job, not a settings one.
  • Open System Information (Option-click the Apple menu → System Information → Audio) and confirm the built-in output device is even listed. If it's missing entirely, that points to a hardware fault.
  • Reset NVRAM/PRAM on Intel Macs (shut down, power on, immediately hold Cmd+Option+P+R for 20 seconds) — this clears some persistent audio-routing settings; Apple Silicon Macs do this automatically at boot.
  • Update macOS. Apple has shipped audio-routing fixes in past point releases, and an outdated OS can mismatch a new Bluetooth or AirPlay device's protocol.
  • Third-party audio software (Boom, Loopback, background-music apps) can silently capture the output device. Quit anything like that and test again.

Related guides

Confirm your Mac speakers work

Run the live speaker test. It plays a tone through the left and right channels so you can confirm your Mac is finally sending audio to the right device — in one click.

Test your speakers