No sound output on my mac

Simultaneously press the Control , Command and Eject keys on the keyboard for a few seconds and then release when the computer reboots. As soon as soon as your computer boots up, you can run a series of tests to see if sound functions are back up and working properly again. As mentioned earlier, misconfigured or incorrect sound settings can also cause audio problems to occur on your computer.

That said, you must consider ruling this factor out especially if the problem continues after restarting the computer system. In this case, the sound is bypassed to the paired Bluetooth device. You can also type in a command line to stop Bluetooth services on your Mac.

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Your Mac will then forget all paired devices and accessories. Restart the computer then test to see if the sound services are now working as intended. A lot of people have found ultimate solution using a command line to kill all audio services on the Mac and then restart them. To kill audio services, open the Terminal app on your Mac and then type in or copy and paste this command:. The next thing you should do is type in this next line of command code:.

How to Fix Sound Not Working on a Mac

After typing in the codes, restart your computer to refresh its core audio functions. If the sound problem persists on your Mac computer after applying the previous solutions, contact Apple Support for further assistance in fixing the issue. There might be some advanced system settings that need to be reconfigured to restore audio functions.

Alternatively, you can set up an appointment for tech service or visit the nearest Apple Mac service center in your place. Oct 5, PM in response to Carsten. Oct 5, PM. Oct 6, AM in response to Carsten. Oct 6, AM. Question: Q: MacBook Air no audio output device found???????? Communities Contact Support. Sign in Sign in Sign in corporate. Browse Search. Ask a question.

[Fixed] No Sound on My MacBook Air/Pro

User profile for user: Carsten. Roth Carsten. Mac OS X Speciality level out of ten: 0. Could you please help me? Anybody has any idea? Thank you Carsten. More Less. Helpful answers Drop Down menu. Jul 28, PM in response to Cr3ate In response to Cr3ate I fought with this problem today and creating another login solved the issue.

View answer in context. Oct 15, AM in response to airbeau In response to airbeau Well the previous fix lasted all of 2 hours. Here's how; Shut down your Mac. You will need to hold these keys down simultaneously in step 4. Turn on the computer. Press and hold the Command-Option-P-R keys before the gray screen appears.

Hold the keys down until the computer restarts and you hear the startup sound for the second time. Release the keys. We'll see how long this fix lasts Oct 4, PM in response to PatQ In response to PatQ I have a similar issue, 1 I have no sound from either my internal speaker or from headphones, 2 the volume control does not appear in the menu bar, 3 opening garage band brings up an error code "Core Audio: Selected Driver not found.

I tried 1 cold boot, 2 zapping the nvram, 3 reinstalling quickplayer, no change. The other threads are for other hardware and refer to a headphone jack reset issue, but that seems to involve different hardware there is no "red indicator light" on the mba. This problem appeared out of nowwhere, it happened after but not immediately after and apparently not associated with installing itunes 8.

Here are all of the known steps to recover your audio. Remember, if you just keep digging around, you will eventually find a solution. HTD says: Let me know if this did or did not work for you. Best of luck. Loading page content. Reply Helpful Thread reply - more options Link to this Post. User profile for user: PatQ PatQ. Roth Same problem here for a few days now.

How to check your sound settings

No sound and also got "bluescreens" no Kernel-Panic! The screen just turns blue an a little loading-graphic appears, but nothing happens. This is really strange, anyone got contact with apple if this is an hardware issue? Roth Its really getting strange. Actually there is another threat about the same subject. Several people are reporting the same subject but it looks nobody found a solution yet?

I really tried everything but still same problem S. Roth Maybe you could check another thing that is a little strange: since I've got these issues with the sound, I can't watch flash-videos anymore. Try to watch a movie on YouTube. It stops after a few seconds. User profile for user: Philip Bendall Philip Bendall. Roth From about 2 October my MacBook Air developed the same problems as described above: no sound output and flash video playback issues. Pressing the volume buttons on the keyboard flashes up the level indicator on the screen but it does not change, and also a little "O" with a line through it appears underneath.

Flash video on various sites plays only for a second or two before stopping, although the file continues to load in. The only software I've installed around the same time this problem first occurred was CoolIris. I have since removed it using its Remove option in one of the menus. I have also had system crashes when trying to wake from sleep. The machine gives the blue screen and either locks up, or freshly reboots to the Login Screen with previously logged in users now logged out, ie a restart. User profile for user: agabot agabot. And it's becoming a widespread thing, from the looks of it.

It happened to me last June. I tried everything you guys did, to no avail. So I took it to the local Apple service center here in Manila and they did determine it was a hardware problem: the audio board and the flex cable were screwed.

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So they replaced two things: Audio Board Part No. I got it back and it worked fine. Apropos of nothing no installs, nothing new software-side , the sound quit working, just like the last time. What was new was that I got a kernel panic after I woke up the Air from sleep, and then when I restarted, no audio. I don't know if this is significant, but the night before, I was oddly getting double-audio out watching something on VLC.

The audio was echoing or repeating a second later. Thought nothing of it at first. Now it's borked again, and I have to bring it back to the shop.

Not in a hurry, because audio isn't mission critical to how I use my Air, but it sure is a bummer. I make do for the meantime with a USB iMic from Griffin, and earphones or external speakers if I need audio, but it's really bothersome to have use a dongle just to get audio. Apple should really look into this. I have half a mind to write about it in my newspaper column and raise a stink.

Hey, I think I will. Roth Thanks Agabot, you really should publish that. It all looks like a epidemic failure without any direct influence of user behaviour. When my audio screwed up, it was the same thing coming from sleep mode like thousand times before. The main objective of this threat from my perspective is to find an effective countermeassure.

And by the way: Audio is a basic function and for me it is critical!

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