Chosen Solution
Little over a day ago, I dropped my Mac Book Air, not a very high drop, and in the morning I noticed that computer was running extremely slow and the fan instantly started when the device turned on. I checked my CPU % and it was running fluctuating from 300% sometimes to 2000%… I didn’t know what to do I’m not very tech savvy. I also noticed that my sound isnt working.. and there is no option in sound preferences for MacBook Air Microphone. Can anyone help? Thanks Kevin.
The I/O cable has become unplugged. Remove the bottom cover and reconnect the cable which runs over the fan, between the main board and the charging board. If this is unplugged, sound/mic will not work and the fans will spin loudly.
