5 Replies Latest reply: Jan 24, 2013 6:24 AM by KMAKMK
KMAKMK Level 1 (0 points)

my output sound will not work when headphones not plugged in.  there is no red light in the headphone jack.

When I try to turn up/down my volume via keyboard controls it shoes as turned all the way up but below that is a crossed out circle

I didn't change any settings to my knowledge

MacBook Pro, OS X Mountain Lion (10.8.2)