Laptop computer screen and external screen

Hi everyone,
My toshiba laptop have a screen that it isnt working anymore. When all this started i've tried to connect it in an external screen but it didn't work. After a year, i've plugged it in via an hdmi monitor and it magically worked, the signal magiccally appeared in my external screen once arrived at the windows login screen.

Yesterday i've putted it in sleep mode and since then, there's nothing shown in the external screen. I've restarted it tried everything, nothing comes up.

Do you guys have any solutions please?

Thanks