I have a MacBook Air (13-inch, Early 2015), OS X El Capitan, processor 1.6 GHz Intel Core i5, memory 4 GB 1600 MHz DDR3, graphics Intel HD Graphics 6000 1536 MB.
The sound is not working and I can not manipulate the volume (first file attached).
I have reinstalled the IOS with cmd+P+R. Nothing was improved.
The system shows that there is no input/output sound device.
Please help me!
MacBook Air, iOS 10.3.3, OS X El Capitan
Go step by step and test.
1. System Preference > Sound > Output > Internal Speakers
Highlight Internal Speakers.
Make sure that Mute is not enabled.
2. 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.
3. Reset PRAM. http://support.apple.com/kb/PH18761
4. Reset SMC. Choose the method for “If the battery is non-removable”.
https://support.apple.com/en-us/HT201295
5. Try starting up in Safe Mode. https://support.apple.com/en-us/HT201262
Once in Safe Mode, click the “Restart” button at the bottom.
6.. Applications > Utilities > Audio MIDI Setup
Audio Devices window
Side Bar
Click the Built-in Output.
Make sure that box is not checked under “Mute”.
Make sure that Format is set at 44100.0 Hz.
Right click on the Built-in Output for available options.
TERMINAL
Use These Commands in Terminal to Maintain Your Audio:
I have done: System Preference > Sound > Output > Internal Speakers
Highlight Internal Speakers.
Make sure that Mute is enabled and I can not modify it. What can I do?
My problem was not solved. The results in terminal are:
and the results in System Preference > Sound > Output > Internal Speakers are the same:
what can I do?
my MacBookAir has no sound
