I have 3 macs, 2 of them are fine but one of it doesn't have the Internal Microphone recording option in Quick Time Player. Only the other 2 have.

How can I fix this?

The MacOS are all 10.14.3 Mojave and the Mac is Mid 2015. The other two are 2018 and 2017.

  • 1
    Can you give the exact models - Mini? Macbook Pro? Air? iMac? Also, does the microphone show up in System Preferences > Sound as a listed input device?
    – benwiggy
    Sep 27, 2019 at 12:09
  • It's a Macbook Pro. Retina 15inch. Sep 27, 2019 at 12:51
  • It's not in the Input device, nor in the output device. Sep 27, 2019 at 12:52

1 Answer 1


If the microphone is not listed as an Input device in System Prefs, then that's a larger problem than just QuickTime Player: the OS can't access the mic at all.

Assuming you've turned the Mac off and on already, you could try resetting the NVRAM.

You might see whether updating to Mojave 10.14.6 improves matters.

Beyond that, it's likely to be a hardware issue. Is it possible that anyone's opened up the insides for a battery replacement, or other issue? Perhaps they didn't put the cable back properly.

  • But I can hear the sound (clear and loud enough), does this mean the problem is not as serious as a hardware one? Sep 28, 2019 at 0:41
  • So you can record using the microphone, you just can't select it? OK, that rules out a physical issue. I'd try resetting the NVRAM.
    – benwiggy
    Sep 28, 2019 at 7:50
  • Do I need to backup my data before resetting the NVRAM? Sep 28, 2019 at 8:42
  • You always need a backup, under any circumstances. ;-) But the reset shouldn't affect the data on the disk.
    – benwiggy
    Sep 28, 2019 at 10:22
  • Also, if that doesn't work, try updating to the latest build of Mojave.
    – benwiggy
    Sep 28, 2019 at 10:22

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