Hi Guys,
I have a 13'' mac book pro (running OS X Lion 10.7.5) . and the sound has gone comletly on it unless i have headphones plugged in. I have tried everything including re -setting the PRAM (which i have done). Please help me.
As i am a student who needs her laptop for her studies and cant afford to send it away to be fixed 
I have a 13'' mac book pro (running OS X Lion 10.7.5) . and the sound has gone comletly on it unless i have headphones plugged in. I have tried everything including re -setting the PRAM (which i have done). Please help me.