My laptop screen is blank on start up and I can't login + my system is freeze whenever I login in

My laptop screen was unable to seen and I can’t see any graphical interface. Also i can’t login to my laptop. The most interesting part is if I login to my pc it just freeze and don’t respond.

I just have to force shut down it.
After restart it look same again.
Now the display is blank and I don’t know what to do!