CAN'T I log into the laptop?

Why can't I log in with this account here on the laptop?

This is a little too little information to find a concrete solution.

Can you change the password, helped me once.

Who is this account?

Where do you want to register?

Etc

Can you possibly manage to ask the question so that we understand what, where, how.

So no, you can't log into your laptop with a questionnaire account, regardless of whether it is a MAC, Windows or Linux.

I did too. I even changed my password. Then I get an "such an account doesn't exist" message