Re: Macbook air internal speaker stop working
I too have this problem but I was thinking this is related to hardware issue. I do not have sound from both (internal speaker as well as headphones). When open garage band it disply this error message core audio driver not found. When I press the volume button on keyboard it flashes up the level indicator on screen.The sound preference display message that no output devices found. Volume slider with grayed Mute box ticked.I will let you know if I get any solution to this problem.
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