Volume stopped working on my macbook pro

sound stopped working yesterday on my macbook pro, Does not work with head phones either. Is it the sound card?

Some things to try:
Go to System Preferences/Sound/output and check if if you can select built in. Make sure volume is up, and mute is not checked
Try taking a set of headphones and plugging them in and out several times (there is a micro switch that sometimes gets stuck)
Go to applications/utilites/Audio MIDI set up check and see if built in is selected, if possible try to select it, make sure volume is up and mute is not checked.
Try a NVRAM/PRAM reset:
Power off, power back on holding OPTION + COMMAND + P + R keys
Hold until you hear the start chime 2 times, then release, reboot

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Hi lancekatigbak,
If you're having issues with the display out on your MacBook Pro, you may want to take a look at the troubleshooting steps in the following article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
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Try the options on this list:
Credit Kappy.
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Associate your mobile number with your Apple ID, if you haven't already done so.
Sign out of iMessage on the Mac:
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and on the iPhone:
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Well if you took it completely apart and couldn't get it to work by operating the silicone "cone" then the trace or contactor must be corroded or discontinuous. The only repair is to replace the keyboard. Sorry.

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Hope info from this article is helpful.
http://support.apple.com/kb/HT2090
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

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I do not know anything about audio consoles nor do I have an iPhone.
My iPod also does not show on the desktop but it is recognized in iTunes, Check if that is the case for your MBP.
Do you have the appropriate boxes checked in Finder Preferences?
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If you have an external HDD, connect it to your MBP and see if it is recognized. If it does not show on the desktop, check Disk Utility.
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I have 10.8.2 running on my macbook pro retina 15' and suddenly microsoft office wont work on it and i have no clue as to what it is. can someone pleaseshed some light onto what the issue could be?

I have the exact same problem. I started having the problem with MS Office 2008 after I installed a new harddrive in my imac (24-inch, Early 2009), OS X 10.8.4. Everything was working fine and then when I try to open any Office app, the icon bounces in the dock, and nothing happens.
I as searched for solutions, the obvious fix was to uninstall office (even all of the excess system files it leaves even after an uninstall). When I a re-install Office 2008, it works for about 1 week and then it stops working again.
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I keep everything up to date and currently have no updates ready at this time.
I also cannot currently FaceTime from my computer either, but both of these work just fine on my iPhone 5 which is connected to the same wifi.

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Hello Professor Tim
... MODERATOR PLEASE HELP!!
What help do you need from a Moderator? (Apple currently calls them Hosts.)
If you can tell me what you need a Host to do, I can pass them a message.
Shouldn't need a Service Center call....
As another long time Mac user, I can offer you some other suggestions that may help you resolve your problem without a trip to an Apple Service Technician.
Because you are having problems with multiple (but not all) applications, I agree that your problem is software. All Apple video capable apps use components from QuickTime in addition the software in the application proper. If reinstalling the two apps that do not work does not resolve your problem, try reinstalling QuickTime, too.
If none of those reinstalls help, some of your other OS X system software may be damaged. How I eliminate that possibility and restore proper function is shown in this post:
http://discussions.apple.com/thread.jspa?messageID=9458954&#9458954
If you have a Time Machine Backup, restoring your system software and problem applications from before your problem began may be the quickest and simplest way to repair the software component that is causing your current symptoms. (Remember to backup important files separately before you begin restoring software.)
If you do not use Time Machine, or if your Time Machine restore does not provide lasting resolution, you can always try a proper Combo Update reinstall, A&I, and Erase&Install as suggested in the link above.
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We will watch for your response. Hopefully, you can report a fix!
Cheers,
EZ Jim
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Go step by step and test.
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2.Plug in and remove the headphone.
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Hi
So keys 1,2,3,4 stopped working. All other keys are working fine. I tried doing some troubleshooting myself but none worked. As far as I can see the keys do not light up on the on screen keyboard when pressed. Do you know of any troubleshooting I can try to fix this problem.
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Volume stopped working on my macbook pro

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