I rarely shut down my laptop because I have tons of work going on. One day while working all of a sudden, the display got vanish and was only able to see a black screen. Then I called one of my friends and he guided me with some steps that fixed all the black screen Error.
1: Delete the faulty Windows update
2: Reinstall Display Drivers
3: Rollback Drivers
4: Check External Devices
Actually, due to overheating my laptop shown a black screen but these steps solved the error in my laptop. You can also Fix Windows 10 Black Screen Error easily.
A piece of advice, do shut down your PC/Laptop after the work is done to avoid overheating.