The Sound Preference panel says “No Input Devices Found” and “No Output Devices Found”, and the volume slider is grayed out with a grayed Mute box ticked.Various apps complain that the machine has no sound output capability.

You may find one or more of the following symptoms in your Mac, when it experiences audio / sound related problem or when there is no sound or no audio from your Mac. But before we focus on the troubleshooting steps of ” no sound or no audio, no output device found” error, let’s read some very common audio related issue and their symptoms.

Fortunately I have explained every possible cause that you may think of, in order to resolve ” no sound or no audio from your Mac” issue.

It may be caused by either software or hardware problems. Several users have reported this issue with their audio output not showing up, leaving them with a muted / silent Mac and an error message in System Preferences stating, “No output devices found.” This issue have been around for quite a long time and majorly occurs in Macbook Air and Mac mini. Although Apple Macs are much reliable than other computers, sometimes something just goes wrong and you do not get sound / audio from your Mac or your Mac can not find any input or output audio devices. Imagine how frustrating it could be if your mac does not produce sound / audio while watching a movie or a video. You can not afford to have a Mac without sound /audio functionality because everyone needs audio at one time or another. I hope it helped, if not, just try this again or we could try to figure out something else.No sound / no audio from a Mac is a very common problem. At least it is so on my mac book running mavericks. This should be the sequense to set VoiceOver sounds to built in speakers. Open VoiceOver utility by pressing Vo+f8 (if your function keys have an alternate action, include Fn also in this keystroke.)ģ. By guessing, you could press the bottom command, what would send VO focus to the OK button and press VO space, which would make the dialog go away, but I am not shure if the focus after that is set back to the table.ġ. Now, pressing the topp to the list command obviously doesn't work because the dialog is on the way. When you navigate the table of output devices and encouter a device, which the computer is unable to connect to (E.G a bluetooth device, which is not in range,) it pops up a dialog on the screen telling unable to connect to the device blablabla.

The only way I got back my speech is I had to use a Braille display to get any output from the computer.

The user tõld us that there is absolutely no speech, thus it is obviously impossible for them to navigate the computer. Isaac, I don't want to be insulting, but pleas read what the original post / previous comments say before writing.

No audio coming from macbook pro