Tap, tap, tap… That’s all I can hear. Yes the sound on my year old MBP has disappeared and all I can here is my own forceful tapping on the keyboard.
Unfortunately this is not the first time this has happened. The first time it drove me nuts. I eventually shut down the computer (which I do rarely) and it solved the problem.
The actual fix is quicker and more simple. Just insert your headphones into the socket and remove them and like magic it seems to kick start the system. Phew. Now you know what to do if it happens to you too.