sound suddenly gone

my friend has mac book that has all of a sudden has no sound

Hmmm…do I need to get out my crystal ball to attempt to answer this?? Not much info given.

Could be a:

- catastrophic hardware failure (very unlikely)
- volume is turned all the way down or muted (possible)
- computer was dropped
- liquid spill (??)
- etc.

* Nick

Add to what Nick said the headphone jack may be stuck sometimes a simple plug and unplug will remedy the headphone jack look into headphone port and make sure there is not a red glow (optical input enabled).

Thanks for adding that. I meant to include it in the list.

- Nick

pigoo3 said:

Thanks for adding that. I meant to include it in the list.

- Nick

Click to expand...

Your welcome and your right without knowing more info things can be thrown out there all day.

osxx said:

Your welcome and your right without knowing more info things can be thrown out there all day.

Click to expand...

Your idea regarding the audio jack. Who the heck knows if the OP's friend has children…and something got jammed in the jack.

This is the sort of "crazy" theories we can come up with when we have so little info to go on.

- Nick

And further to assist Nick's crystal ball, have you rebooted lately? Cures a lot of evils.