Two days ago for a reason I don't know, the internal speakers and microphone on my MacBook Air stopped working. I was trying to call on Skype, which I've had on my Mac for years, if that helps figure it out. I know nearly zip about how to fix this thing but I at least figured out by going to Systems Preferences - Sound, that there is no "built-in" option anymore under Output nor Imput, which I suppose must have been there when I could hear anything. My brother says to find the sound driver but I've spent a long time trying to figure this out and can't. When it happened it kept trying to get me to use a Bluetooth but I bought a Bluetooth device several months ago and immediately hated it and don't want to or remember how to use it anymore. I want to use my internal speakers and mic! Please help!