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A strange thing happened 3 days ago, where my keyboard stopped working suddenly. I restarted the laptop and then I couldn't type anything, not even my password.

After some hours I realized that the control key was somehow enabled the whole time and that's why I couldn't do anything.

So I disabled the control key from the keyboard settings and it worked for some minutes, but then the same problem happened again. I enabled the sticky keys feature and saw the control still enabled.

After I while I noticed that the down arrow key behaved as if it were the control key.

Specs: MacBook Pro Retina 2015 running macOS Mojave

Note: I've tried restoring, but now the keyboard shortcuts don't work anymore while booting up, not even booting from the USB.

QUESTION: How can I troubleshoot this further to fix my keyboard?

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  • What other apps do you have to control the key board? using external USB cable keyboard might help for now, and allow you to fix the problem. – Ruskes Nov 28 '18 at 23:06
  • @Buscar웃 the same behavior was found while using an external Keyboard – james Nov 29 '18 at 6:37

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