Good day, I have Macbook Pro 2012 with el Capitan 10.11.3.
The problem - no sound from my mac.
I have listen the music, after that I decide to insert headphones, when I'm taking out the headphones sound from Mac disappeared and there is red light from audio jack. Between that I have made an update from 10.11 to 10.11.3, maybe the problem is with that?
There was not any sound from my mac on startup, but when I have use disk utility repair the sound on startup appears..