If your computer screen is black when you turn it on, it could mean a few different things:

1. Check connections: Make sure cables and cords are firmly and securely connected to the computer.


2. Restart the computer: Unplug the computer and then plug it back in, and then turn it on.


3. Check CPU and Power Supply: Check that the lights on the CPU and power supply are on.


4. Run a diagnostic: If the computer turns on but it doesn’t boot up, you can run a diagnostic to check if any errors are occurring.