My laptop screen is not working and forgot the password?

But when I connect to TV with HDM cable it works. The problem, I forgot my password and when I try to rebotte, I only see black screen on the TV.

Is there a solution?

I'm assuming that you are using a Windows device. If you're lucky you use the Microsoft password to log in, which you can change quite relaxed on the Microsoft side.

Otherwise you look there:

https://www.howtogeek.com/222262/how-to-reset-your-forgotten-password-in-windows-10/

The problem, my e-mail has been blocked and can't change.