USB-C and power supply failure after upgrade to Mojave 13.4

Did you upgrade to 13.4 and suddenly all of your USB devices (including the power cable in my case) stopped working? Scary eh?


Well, I *may* have a solution for you that worked in my case. With just 4% battery left, I performed an NVRAM reset which fixed the issue in my case.


  1. Turn of your Mac.
  2. Turn on your Mac and immediately hold down Option+Command+P+R simultaneously.
  3. Turn on your Mac again.
  4. Pray to your God, if you have one.
  5. Do a little happy dance.


Hope this helps!


Posted on May 18, 2023 2:46 PM

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USB-C and power supply failure after upgrade to Mojave 13.4

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