keyboard not responding on macbook pro

after i restart my macbook pro 2016, i need to sign in with my password.

but the keyboard is not responding. so i am not able to enter.

even if i enter as a guest i need to connect to a wifi and the keyboard does not work so i cannot input the wifi password

how or what can i do to make the keyboard function?

as previous times it happened this month and eventually the keyboard responded in an hour.

now its days by and nothing happening

thank you