How to reset sound on macbook air

The sound can stop working on your MacBook at any time for a variety of causes. Because it has so many possible causes, it's hard to pin down exactly when your MacBook can lose audio, but this article will step you through the possible reasons and fixes.

The reasons you can't hear sound coming out of your MacBook's speakers are many, but they may include the following:

• An audio device is connected to one of your ports.
• The sound is muted.
  
• Your speakers aren't selected as the output device.
• Your computer didn't start up properly.
  
• You need to reset the PRAM or NVRAM.
• The operating system needs an update.

The following solutions can get your MacBook's sound working again, and they go from easiest to most complicated. Try them each in order to see if the audio comes back.

1. Unplug any peripherals you've connected to your MacBook. Headphones, speakers, and other devices can stop audio from coming out of your MacBook's speakers. Disconnect them to see if the sound comes back.

2. Turn off Bluetooth. Along with hard-wired devices, you may also have speakers or headphones connected wirelessly. Click the Bluetooth icon at the top of your screen, and then toggle the switch to off. This method is more straightforward than checking for connected devices and then disconnecting them, and it's just as effective if this is the issue.

3. Make sure your sound isn't muted. Press the volume adjustment buttons on your keyboard, including Mute, or check the volume slider at the top of the screen.

4. Check your sound preferences. Open System Preferences, and then go to Sound > Output. Under Select a device for sound output, click MacBook Speakers, MacBook Air Speakers, or MacBook Pro Speakers, depending on what kind of laptop you own.

   At the bottom of this window, make sure the Mute checkbox is not checked.

5. See if macOS needs an update. The sound not working on your MacBook may be a bug in the current version of macOS. Open System Preferences, and then click Software Update. Your computer will check to see if an update is available and prompt you to update (which almost always involves a restart).

   Before you update macOS, make sure you back up your MacBook.

6. Restart your MacBook. The problem may be your MacBook didn't initialize the sound drivers correctly when it booted up. A restart can give it another chance to start everything properly—select Restart from the Apple menu in the upper-left corner of your screen.

7. Reset the NVRAM. Depending on what kind of MacBook you have, it may use non-volatile RAM (NVRAM) to store specific settings. Like any other memory, it benefits from an occasional reset. What you'll reset depends on your processor: If you have an Intel Mac, reset the NVRAM by shutting down the computer and restarting it while holding Command + Option + P + R.

   If you have a MacBook with an M1 chip or later, it still uses NVRAM, but you can't reset it using this method. A normal restart should take care of it automatically.

8. Contact Apple. If your MacBook's sound still isn't working, it may need servicing. You can take it to an Apple Store or an authorized repair place, either of which should be able to diagnose and fix the problem.

FAQ

• How do I screen record on a MacBook with sound?

  The built-in screen recorders for macOS, including the one for QuickTime, won't also capture the sound coming from your computer; you'll need to use a third-party app, plug-in, or capture card. You can, however, record audio over the top of a screen recording through a mic; this feature makes it easier to record narration over your video without having to sync it up later.

• How do I record audio on a MacBook Pro?

  You have many options to make audio recordings on a MacBook, including the Voice Memos, QuickTime, and GarageBand apps. You can also use a third-party option like Audacity.

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Having the sound on your Mac not work can be frustrating, and understandably so—not to mention if it happens during a work or school presentation.  

It could come down to a host of factors, like your Mac’s sound being muted. Whatever the case is, it doesn’t necessarily mean that your Mac is broken.  

So, don’t rush to call Apple Support just yet—there are a few things to check before taking your device to the nearest Apple store. This article will outline all the steps you need to take to find and fix the volume issue on a Mac device.

Before we start

The sound not working on your Mac can be a consequence of multiple system problems. This is why it's necessary to keep your Mac in good condition as this will minimize any risks—check it for viruses and malware, optimize its performance, and clean it systematically.

To help you keep an eye on your Mac, just download MacKeeper. It will deal with the unsavory tasks and allow your Mac to run smoothly.

Check for internal issues

1. Fix internal sound settings

The most obvious cause of your Mac’s sound not working could be found in sound settings. That’s why you have to find out if your Mac’s internal speakers are working.

In fact, this applies to all types of speakers, so try these steps to find out:

1. Go to Apple Menu → System Preferences → Sound → Output
2. You should see Internal Speakers as a device for sound output. If you’re currently using another device, switch to Internal Speakers and adjust the output volume. You might want to check if the Mute box is ticked. If it is, uncheck the box
3. If you don’t see the Internal Speakers option, try restarting your computer and resetting NVRAM. More on that later

2. Check if the sound works in other apps

If audio is not working on your Mac, check if it changes when you use other apps. If the problem seems to be restricted to a particular application, try playing around with its settings.  

For example, video-conferencing apps such as Skype and Zoom often have speaker malfunctions. Check its audio and video settings and make sure that the speaker is on all the way to the right on the slide bar.

3. Check for malware infection

If nothing seems to resolve the problem and audio still doesn’t work on your MacBook, it’s either experiencing a hardware malfunction or is infected with a virus.  

How do you tell if either of these are the case? Look out for signs such as:

• Excessive pop-up ads
• Suspicious warnings on the browser page
• Poor Mac performance

If any of these sound familiar, your laptop may be infiltrated with malware. If you’re still unsure, follow our guide to check for viruses or malware on your Mac.  

Simply deleting the source file is not enough—the virus will have spread across the entire system. It sticks to different files to make it harder to pin down and remove. You can use a Mac malware scanner to detect and exterminate it.

4. Update your operating system

It’s important to keep your Mac’s operating system up-to-date, mainly for security reasons. But having an old OS version can also result in all sorts of malfunctions—including sound problems.

You can check if you’re running the newest version of your operating system by doing the following:

1. Go to the Apple Menu in the top left corner of the screen and clicking System Preferences → Software Update
2. You will see the corresponding button if there is an update or an upgrade available

Still not sure how to go about it? Here’s what to do:

5. Fix audio on MacBook with Terminal

If you’ve used Terminal before, you’ll be familiar with the variety of functions it performs. It’s brilliant for fixing technical problems and has a solution for volume issues on your Mac.

Follow these simple steps to fix sound issues with Terminal:

1. Go to Applications → Utilities → Terminal
2. Type in “sudo killall coreaudiod” and press Enter
3. This should reset your Core Audio daemon

If you use Google Chrome, you might find that the newest versions interfere with the controller. To fix that, you first need to disable Chrome.

Here’s what you need to do to reset Core Audio as a Chrome user in Terminal:

1. Start by shutting down Chrome. Type in “sudo killall Google\ Chrome” and press Enter
2. If this command doesn’t disable the browser, try “pgrep -x Google Chrome"
3. Terminal will now show you a number. Type in “kill -9 _” with the number in place of the underscore. Hit Enter. This will knock out Chrome
4. You can now use the sudo “killall coreaudiod” command again to reset Core Audio. Google Chrome will work normally when you open it again

6. Reset NVRAM to fix the Sound

Non-volatile random access memory (NVRAM) stores important baseline settings on your Mac, like timezones and language. It also controls volume.  

NVRAM is the reason why the sound on your computer remains muted after you’ve shut it down and turned it back on. Therefore, resetting NVRAM often resolves sound problems.

Here’s how to reboot NVRAM:

1. Shut down your Mac completely and disconnect any USB devices and the charging cable
2. Press the power button to turn it back on. When you see the grey screen, hold Command + Option + P + R until the Mac reboots again and plays the startup sound
3. Reset any local settings such as languages and time zones. Most importantly, the sound should now work fine

MacBooks released after 2018 are equipped with a T2 security chip that gives computers additional protection and allows them to have touch ID. If you own one of these, look out for the Apple logo when resetting NVRAM—make sure it appears twice.

7. Use Activity Monitor to resolve sound problems on Mac

If you’re confident that the sound problem on your Mac doesn’t arise from a wonky cable, poorly established browser settings or a misplaced output device, you might want to restart the sound controller. It can be done quite easily through the Activity Monitor.

To access the program, follow the steps below:

1. Go to Applications → Utilities → Activity Monitor. You’ll see a list of processes with their % CPU next to them
2. Locate the search bar in the top-right corner of the window and type in “coreaudiod”, which is a daemon name for your Core Audio process
3. Click on the heading, then click on the cross in the top-left corner to quit the controller. It automatically restarts immediately after you’ve clicked on it

Want to learn more about this program? Here’s how to open and use Activity Monitor on your Mac.

Check for external issues

Have you tried playing a song in a different app? Try various websites and audio files. If your MacBook Pro still has no sound, go through the fixes outlined in the sections below.  

1. Check Bluetooth device connection

Bluetooth headphones and speakers are useful gadgets, but we all know how annoying they can be when you have to pair them with the input device. Make sure they’re actually turned on and connected.

Here’s how:

1. On your MacBook, go to System Preferences → Bluetooth and check that Bluetooth is on
2. Look for your output device’s name in the list of devices. Sometimes, they fail to pair automatically. In this case, you’ll see the Pair button next to the name
3. If pairing doesn’t occur, try resetting your computer and the headphones or speakers

Follow these steps to fix Bluetooth issues on Mac.

2. Check sound settings in Chrome

If you’re trying to play something in Chrome and there’s no sound, you may have the setting turned off. Here’s how you can turn it on:

1. Open Chrome on your Mac
2. Click on the three-dot menu in the top-right corner of the window and click on Settings at the bottom
3. Click on Privacy and security > Site Settings  
4. Scroll down and select Additional content settings > Sound
5. Now click on the circle next to Sites can play sound

That should sort out any sound issues you’ve experienced when playing something in the Chrome browser.

3. Troubleshooting for external speakers

Does it seem like your Mac’s external speakers aren’t working? If you’re using external speakers, the first thing you should check is whether the device is properly connected to your computer. The cable must be tightly attached to the USB or audio port, and the port itself has to be clean.  

We tend to collect dust in them over time, so make sure to regularly clean it with cotton buds, toothpicks, and compressed air to enable proper connection.

If you don’t think that the cable is the source of the issue, follow the steps below:

1. Go to Apple Menu → System Preferences → Sound → Output and make sure to choose your external USB speakers as the output device
2. If you don’t see them there, try unplugging and plugging back in
3. If they’re connected via the audio port, you’ll see a pop-up menu called Use audio port for… Check that it’s set for Sound Output

Of course, if you aren’t using external speakers, this isn’t something you should worry about.

4. Troubleshooting for display audio  

Before going to System Preferences, make sure that the display’s cable is properly connected to your laptop’s ports and that there are no headphones plugged in to the audio port.  

Once that’s done, go to System Preferences → Sound and set the settings in the Output section for Display audio as the output device.

5. Troubleshooting for digital receiver

To fix the sound for digital receivers, check that you’re using the right connector—you need a special optical digital cable.  

Next, check the receiver's settings (you’ll find the instructions on how to do that in your device’s manual)—they have to be set up for digital input.

Follow the instructions below:

1. On your Mac, go to System Preferences → Sound → Output and select Digital Output as the device
2. Play with the volume controls on the receiver to see if you’d accidentally left it off

That’s it, your audio issues should now be resolved!

Sound issues sorted

In this article, we covered all the bases to help you figure out what may be the cause of your sound problems and showed you how to fix them. However, if you’re still having issues after trying everything we’ve advised, it would be best to contact Apple Support.