In case your laptop screen is black when you turn it on your laptop or computer then do not worry. You need to check your monitor first.
You can check your display adapter because the corrupted adapter is one of the factors of the laptop screen black. Check your driver and you can roll back your graphics driver also.
Then you have to restart your device. If still your device screen it black then check your screen with the help of another screen. If it is not working then it may be possible that the Laptop screen is corrupted. Then you have to change your screen. otherwise you have to reinstall your graphics drive.
