My MacBook Pro's sound is not working! HELP!

This problem heppened when I was using my headphones.
When I try to change the volume on my computer, it gives me a sign that it is locked.
I have tried restarting, plugging and unplugging headphones, and fiddling in the port with a tooth pick.
Thank you

Do the internal speakers work?
Go step by step by step and test.
1. System Preference > Sound > Output > Internal Speakers
    Highlight Internal Speakers / Headphones
    Make sure that Mute is not enabled.
2. Hold the option key down, click the sound icon in the menu bar and select internal speakers or headphone.
3. Any red light visible in the headphone port
    Even if there is no red light visible, plug in the headphone in and out 6. or 7 times.
4. Launch iTunes and play a song. Try to move the volume slider in the mini player.
5. Close all windows and quit all applications.
     Launch Finder. Select Macintosh HD in the Finder sidebar.
     Macintosh HD > Library > Preferences
     Open "Audio" folder.
     Right click these two files and select "Move to Trash".
     com.apple.audio.DevicesSettings.plist
     com.apple.audio.SystemSettings.plist
     Close the window. Restart the computer.
6. Reinstall OS X 10.9 Mavericks
     http://support.apple.com/kb/PH13871
If this does not help, you may have to take the computer to the Apple store to have it checked out.
Best.

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My macbook pro 15' sound is not working, every time i turn on the internal speakers they just turn back off, and i have already tried putting in my headphones 5 or 6 time

my macbook pro 15' sound is not working, every time i turn on the internal speakers they just turn back off, and i have already tried putting in my headphones 5 or 6 time

Hi eleni_georgia,
Welcome to Apple Support Communities.
The article linked below provides some additional tips that will help you resolve the audio issue that you described.
Troubleshooting issues with no audio from built-in speakers on Macs
http://support.apple.com/kb/TS1574
Cheers!
-Jason

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Something inside of the headphone jack is not right, such that it randomly thinks headphones or some other type of optical audio device are plugged in. you will see a red light inside the jack occasionally when it happens.
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In system preferences > sound > output, it will switch from normal internal speakers > built-in, to headphones > built-in, to digital out > built-in, to headphones > headphone port, to digital out > headphone port- it's nuts! This is all without having anything actually plugged into the headphone jack. While it is greyed out (which happens randomly and on any of the settings), there is no sound whatsoever and it says, "The selected device has no output controls.". Also coinciding with this, my computer has begun to suddenly run extremely slow and lags a lot. Is there a way to fix this? I already tried updating my computer, and restarting it, and it didn't help. I'm wondering if maybe the headphone jack somehow was shorted while I had some speakers plugged in for gaming...? Or is this something I need to send my computer in to be repaired for?
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I have this same issue and have been struggling with it for a while. I really just need to get it into Apple Store to be fixed most likely - but avoiding the hassle and time needed to do so.
Things I've come across:
Something inside of the headphone jack is not right, such that it randomly thinks headphones or some other type of optical audio device are plugged in. you will see a red light inside the jack occasionally when it happens.
You might try doing PRAM and/or SMC reset ( http://support.apple.com/kb/HT3964 )

My MacBook Pro internal speakers are not working, what happened?

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Hopefully one of these steps should solve the problem.
1. Remove the headphone.
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2. Reset PRAM. http://support.apple.com/kb/PH4405
3. Reset SMC.     http://support.apple.com/kb/HT3964
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since my mac is year and two months old (funny, two months and you are screwed).
Not if you had of purchased Apple Care. You would have been covered for 3 years.
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This is not the place as Apple does not come to these forums.
These are user-to-user forums where everyday folk post "technical" questions and offer answers to each other voluntarily. No one here works for Apple nor does Apple get involved in responding. Not even sure if they "lurk."
"Say" it here -
Product Feedback

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Message was edited by: fivedays5
Message was edited by: fivedays5

Welcome to Apple Discussions
It sounds like the power board inside the MacBook Pro has failed, best get it to an authorised repair centre.

Macbook pro buzzing, sound doesn't work, disk is falsely full...

My 15 inch macbook pro has started buzzing a lot lately at random times. I've had it since 2009, but it's a 2008 model, and I don't know if it's just getting old and telling me that it's going to die soon, or if there's something I can do about it.
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Devices:
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================================================================================ =====================
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Hey romeopatel,
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http://support.apple.com/kb/HT6510
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When you select AirDrop, OS X looks for other Mac computers and devices that are nearby that also use AirDrop. If you don't see someone in the AirDrop window, here are some things to check.
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MacBook Pro (Late 2008 or newer)*
MacBook Air (Late 2010 or newer)
MacBook (Late 2008 or newer)*
iMac (Early 2009 or newer)
Mac Mini (Mid 2010 or newer)
Mac Pro (Early 2009 with AirPort Extreme card, or Mid 2010)
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For help identifying your Apple product, choose About This Mac from the Apple menu, or refer to the Apple Support website.
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Regards,
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From Mac Basics: AirDrop lets you send files from your Mac to ...
"In order to transfer files between a Mac and and an iPhone, iPad or iPod touch, your iOS device needs iOS 7 or later installed and your Mac needs to be a 2012 or later model."

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No one cared enough to answer.

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My MacBook Pro's sound is not working! HELP!

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