MacBook Pro Suddenly Has No Sound? Here‘s How to Fix It

Is your MacBook Pro suddenly silent with no audio playing? Don‘t panic! This is a common issue that many Mac users encounter at some point. Whether you‘re trying to enjoy music, watch a video, or take a Zoom call, having no sound output from your MacBook Pro‘s speakers can be incredibly frustrating.

Luckily, there are several troubleshooting steps you can take to diagnose and resolve the problem yourself before resorting to professional repair. In this guide, we‘ll walk you through the most effective fixes for MacBook Pro audio issues step-by-step.

Check Your MacBook‘s Physical Mute Button and Volume Keys

Before diving into software settings and more complex solutions, first make sure your MacBook Pro isn‘t simply muted or has the volume turned all the way down. Look at the row of function keys at the top of your keyboard. Tap the F12 key (or fn + F12 on certain models) a few times to toggle the mute button off if needed.

You can also press the F11 key (or fn + F11) repeatedly to turn up the output volume to an audible level. If this resolves the issue – great! You can stop here. But if you‘re still not getting any sound, continue on to the next steps.

Restart Your MacBook Pro

One of the quickest, easiest fixes to try is simply restarting your computer. This clears out any temporary system quirks or glitches that may be impacting the audio.

To restart your MacBook Pro:

1. Click the Apple menu icon in the top-left corner of the screen.
2. Select "Restart…" from the dropdown menu.
3. Click "Restart" in the pop-up window to confirm.

Once your Mac boots back up, see if the sound is working again. If not, move on to checking your audio settings.

Select the Correct Audio Output Device

If you use external speakers, headphones, or other audio devices with your MacBook Pro, the output may be set to the wrong device.

To check your current audio output:

1. Click the Apple menu icon, then select "System Preferences."
2. Click the "Sound" preferences icon.
3. Select the "Output" tab at the top of the window.

Here you‘ll see a list of available output devices. If "Internal Speakers" is not selected, click it to switch the audio back to your MacBook Pro‘s built-in speakers. You should see a volume slider appear below the devices list.

If you don‘t see "Internal Speakers" as an option, or selecting it doesn‘t restore the audio, continue to the next step.

Check the Output Volume Level

Even if your volume keys are turned up and the mute button is off, your MacBook Pro‘s system volume may still be set too low or muted in System Preferences.

While still in the Sound preferences window, look at the "Output volume" slider near the bottom. If it‘s dragged all the way to the left, the volume is essentially muted. Click and drag the slider to the right to raise the output volume.

Also make sure the "Mute" checkbox is not enabled, as this will silence the audio even if the volume slider is turned up. If the volume level and mute settings were the culprit, you should now hear sound coming from your speakers. If the problem persists, there may be a software/driver issue at play.

Update macOS to the Latest Version

Apple regularly releases free software updates that include bug fixes, security patches, and performance improvements. Installing the latest macOS version can often resolve strange audio glitches or incompatibilities caused by outdated software.

To check for macOS updates:

1. Open the System Preferences window.
2. Click "Software Update" in the bottom row.
3. If an update is available, click "Update Now" or "Upgrade Now" and follow the prompts.

Keep in mind that these system upgrades can be large downloads and take a while to complete, so make sure your MacBook Pro is plugged in and you have a stable internet connection.

After updating, restart your computer for the changes to take full effect, then test the sound again. If it‘s still not working, you may need to reset a hidden system component.

Reset the NVRAM/PRAM on Intel MacBooks

This step is for MacBook Pro models with Intel processors only. If you have a newer MacBook Pro with an Apple M1 or M2 chip, skip ahead to restarting the sound controller.

Intel-based Macs have a small amount of non-volatile memory called NVRAM (or PRAM on older machines) that stores certain settings like screen resolution, time zone, and volume. Resetting this memory can sometimes resolve odd behavior.

To reset the NVRAM/PRAM:

1. Shut down your MacBook Pro fully.
2. Press the power button and immediately hold down the Option + Command + P + R keys all at once.
3. Keep holding until you hear the startup chime a second time, then release the keys.

Let the Mac boot up normally and check if the speakers are working again. If not, move on to restarting the sound controller.

Restart the Sound Controller

All Macs have a process called "coreaudiod" that manages the sound server and audio devices. Restarting this sound controller can clear up problems if it has crashed or glitched out.

To restart the sound controller:

1. Open the Applications folder.
2. Open the Utilities folder and launch the Activity Monitor app.
3. In the search box, type "coreaudiod" to find the process.
4. Select coreaudiod, then click the X button in the top-left to quit the process.

Within a few seconds, coreaudiod should automatically relaunch itself. If successful, your MacBook Pro‘s audio should be restored. But if you‘re still getting no sound at all after all these steps, you may be dealing with a hardware issue.

Check for Hardware Issues

If your MacBook Pro‘s speakers have been physically damaged by drops, liquid spills, or debris, no amount of software troubleshooting will fix the audio. To check for visible hardware damage, shine a flashlight into the speaker grilles on either side of the keyboard and look for obvious problems.

You can also try gently playing sound directly through headphones or external speakers plugged into the headphone jack. If you still don‘t hear anything, there may be a loose audio cable inside the computer or a fried sound card.

At this point, it‘s best to contact Apple Support or schedule a Genius Bar appointment for further diagnostic tests and repair. Attempting to open up your MacBook Pro yourself to replace components is not recommended and will likely void your warranty or AppleCare coverage.

Boot into Safe Mode as a Last Resort

If you‘re still experiencing audio glitches or strange behavior even after a hardware check, you can try booting your MacBook Pro in safe mode. This starts up your Mac with only the bare minimum programs and drivers needed to run.

To boot in safe mode:

1. Turn off your MacBook Pro fully.
2. Press the power button, then immediately hold down the Shift key.
3. Keep holding Shift until you see the login screen.
4. Log in to your Mac (you may need to log in twice if you have FileVault enabled).

You should see "Safe Boot" in red letters in the top-right corner. Launch a web browser or media app and try playing audio. If the sound only works in safe mode, it‘s likely that a third-party app, plugin, or system extension is conflicting with the audio.

To address this, restart your Mac normally and update any third-party software you recently installed. You can also open a new user account to isolate whether the issue is specific to your main account.

Contact Apple Support or an Authorized Service Provider

If you‘ve exhausted all the troubleshooting steps above and still have no audio on your MacBook Pro, it‘s time to get a professional opinion. Contact Apple Support online or by phone to discuss your repair options.

If your Mac is still under warranty or AppleCare+ coverage, any repairs will likely be free or low cost. But if your warranty has expired, you may have to pay out of pocket for diagnostics and fixes.

To save time before your support session, make sure to document all the troubleshooting you‘ve already tried on your own. The more information you can provide, the quicker a technician will be able to pinpoint the problem and suggest a solution.

Enjoy Your MacBook Pro‘s Audio Once Again

We hope this guide has helped you resolve your MacBook Pro sound issues and get your audio working properly again. Whether it was a simple settings change or a more advanced fix, you should now be able to enjoy your music, movies, video calls, and all the sounds your Mac has to offer at their full potential.

As a final tip, be sure to keep your MacBook Pro‘s system software up-to-date and regularly check for any pending updates in the App Store. This will help prevent pesky audio problems and other bugs from cropping up again in the future.

Do you have any other tried-and-true tricks for fixing MacBook Pro sound problems? Got a story about troubleshooting a particularly stubborn audio issue? Share your experiences and advice in the comments below!