I am stuck in mute with no sound
the mute box is checked in input and output under sound and it is colored light grey and will not allow me to uncheck it. ultimately I have no sound
MacBook Air 13", macOS 10.15
Question marked as
Go step by step and test.
1. Plug in and remove the headphone.
If you see red light in the headphone port, plug the headphone
in and out of the port 5 or 6 times to flip the microswitch inside.
Sound output may be stuck in digital mode.
2. Reset PRAM. http://support.apple.com/kb/PH18761
3. Reset SMC.
Choose the appropriate method.
https://support.apple.com/en-us/HT201295
4. Try starting up in Safe Mode. https://support.apple.com/en-us/HT201262
Once in Safe Mode, click the “Restart” button at the bottom.
5. For additional help: https://support.apple.com/en-us/HT203186
