No sound on my macbook pro retina

I bought a macbook pro with retina display yesteray, 8gb RAM and 128gd hd. The sound stopped working yesterday after unplugging my headphones, I updated the software to the OSX 10.9.1 and it worked again. It was working fine thiis morning but after turning it off for a couple of hours the sound went off again. Does anyone know what this could be, or how to fix it?

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A new Mac is in warranty for 1 year from the date of purchase.
A new Mac comes with 90 days of free tech support from AppleCare.
AppleCare: 1-800-275-2273
Call AppleCare.
Best.

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Best.

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well, I tried anyways
JB

No sound on my macbook pro retina

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