Try resetting the PRAM-: If you run this process, you might fix any sound-related issue. Consider updating your software-: Ensure that your Mac has the latest macOS version to improve performance and fix any issues, including locked volume.Ĩ. So, apart from the audio port, ensure that all other ports are clear.ħ. Take a look at your ports-: Try disconnecting anything connected to your Mac, including HDMI cable, thunderbolts and USB devices, since they might have a potential effect on the audio. Once it’s dislodged, connect some headphones and press while holding one of the volume buttons to test whether you’ve resolved the issue.Ħ. So, if there is dust or any other debris, blow it out. Check if the headphone jack is clogged with debris (some Mac models indicate it with a red light)-: Your volume might stop working when there is something in the port, probably dust or a bit of fluff. If they are, plug them out to test the volume through your Mac’s internal speakers and determine whether you’ll hear sound playing.ĥ.

Look for any external volume devices-: By checking your headphone socket, assure you that there are no plugin gadgets like AirPods to the Mac. If pressing F12 doesn’t work, you can alternatively click on the volume option at the menu bar.Ĥ. Therefore, locate the F12 key on the keyboard and tap it to display an overlay on your screen. Press the volume-up button-: This is to ensure that the volume is not turned down. If that’s the case, locate sound controls in the video window you’re watching from and adjust it yourself since some videos come muted by default.ģ. Probably, you have accidentally turned down or muted the volume in Safari.

Check whether there is a volume in a different app-: The sound could be functional in music or iTunes, but not in Safari. If you find you cannot log in after a Mac restart see my post here to solve all login issues.Ģ. Turning it off and on again helps resolve an issue like this, so go ahead and give it a shot. In order to fix locked volume in your Mac, first, play something in music or iTunes, a video or music to confirm that there’s definitely no volume, and then try the following tips:ġ. Reset the SMC (System Management Controller).Check If There’s volume in different apps.

Turn up volume on mac keyboard