"Why did my internal keyboard and mouse suddenly stopped working?"에 답변I have just faced the same problem. Keyboard and trackpad of my MacBook Pro 13” Early 2015, do not respond now it all. The problem started after I installed macOS High Sierra before 2 weeks. Everything was working fine before that. For the past 2 weeks whenever such thing was happening I was just shutting it down and turning it on again and was working. Now this option is not working too. I am just wandering what has happened as I was taking good care of my system. I hope the issue can get resolved.