MBA Audio won't "unmute"

[xecure]

I have a mid 2013 macbook air and after updating to OSX 10.9.3 my audio stopped working. This is affecting both my internal speakers and headphones

This is what I see when pressing the volume up and down:

(notice the symbol under the volume bar)


Any idea what is causing this? How can I fix this?

 

[leventozler]

Go to System Preferences > Sound and check the output device.

 

[fisherking]

try plugging and unplugging the headphones; try doing this briskly! i've seen this work (on a friend's macbook pro).

 

[xecure]

That's odd, nothing is coming up.

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try plugging and unplugging the headphones; try doing this briskly! i've seen this work (on a friend's macbook pro).

Unfortunately I've already tried this and no luck =(

 

[53kyle]

That's odd, nothing is coming up.

Before doing anything, back up your data. First, bring the computer to the genius bar and get it checked, and if it is broken they will likely replace it with a new one. If their tests result in no errors, you may need to reinstall the OS by holding command-r on startup.

 

[fisherking]

First, try reinstalling OS X. Back up your data and then erase and install (hold command-R when you start the computer.) If that doesn't work, you need to bring the computer to an apple store and get it replaced.

or the reverse, go to a genius bar first...

 

[53kyle]

or the reverse, go to a genius bar first...

Edited