Why is my MacBook Pro's keyboard not responding?

skb_ wrote:

still no keyboard so cant log in

well you can plug in an external keyboard and compare your results..

or take it for assessment and remove the guess work.

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support

From iOS device using the "Apple Support.app” to make a online Genius Bar appointment is easy: 

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

skb_ wrote:

https://discussions.apple.com/content/attachment/07d7bed8-2e55-471e-968a-ce77c70cf2b0

I cannot log in because the keyboard is not responding. Mouse works fine and allows options for keyboard "input source" and restart.

[Re-Titled by Moderator]

On an M-series mac you can try a SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies

Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled temporarily.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.