MacBook Pro has no sound, no way to adjust volume, and will not play music.

Question

My MacBook Pro seems to have lost all of its audio functions.  I cannot adjust my volume using the keyboard controls, or through the button at the top of my desktop screen, or even through System Preferences.  I get the normal volume adjust screen, but it is faded, and there is a symbol over it indicating that I cannot adjust anything.  When I go into the Sounds menu from System Preferences, there is nothing for me to select under Input or under Output.  My computer makes no noise, whether I'm using iTunes, watching a video, or anything.  I cannot play music.  My songs simply won't start, and when I skip to any given part of a song, the music still refuses to play.  I am not getting the red light from my headphone port.  I tried to remove any dust that may have collected in the headphone port, and I've even tried to reset my NVRAM and PRAM.  I also updated to OS X Mavericks 10.9.2.  Nothing helped.  I remember that my MacBook was working perfectly fine all of yesterday, but at one point later in the evening, I tried to plug in my headphones to play music, but nothing would play.  I opened Spotify, and it gave me a message that my speakers were broken (I was using the internal speakers).  That's when I first noticed the issue.  Is there anything else I can try before going to the Apple Store and having them try to fix it? Thank you very much, I appreciate any help.   

Answer 1

The last gasp is an OSX reinstall.  If that fails, then the genius bar is the best option.
Ciao.