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The keyboard and trackpad of my MacBook Pro 2015 suddenly stopped working. I searched the Internet and did a SMC and PRAM reset with an external keyboard.

The PRAM reset (I reset the PRAM with command+option+P+R as explained here) helped solve the issue: I could use the keyboard and tracked again, so I think it is not a hardware issue, but after a restart it stopped working again.

I tried Apple Diagnostics (as explained here) and it returns No issues found. Reference Code: ADP000. So I confirmed it is not hardware issue.

I also tried reinstalling macOS, but it didn't help, the problem persists. This reinstallation kept all my previous data and settings

Do I need to reset the PRAM every time I start my Mac? What is the problem with my MacBook? How do I permanently reset the PRAM? And what about Wipe all data and reinstall macOS, will it solve this problem?

  • OS X has an onboard diagnostic suite which you can run by pressing the D key on startup. Here's a link to an Apple Support page on that. Run the tool and see what comes up. – marshki Aug 26 '18 at 10:45
  • @marshki It returns No issues found. Reference Code: ADP000 – Loki Aug 27 '18 at 5:41
  • I saw a thread that indicates this is a know problem with this model. The likely fault is with the Mac's trackpad cable, which would need to be replaced. Here's the thread. If there's an Apple store nearby, have them take a look. – marshki Aug 29 '18 at 14:49

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