Here are a few things to try if your laptop’s screen isn’t turning on after closing and opening it:

1. Check to make sure the laptop is plugged in.
2. Check the power strip or surge protector to make sure it’s on.
3. Make sure the power cord is plugged securely into your laptop and the AC adapter (or wall outlet).
4. Restart your laptop by pressing and holding the power button.
5. Unplug the power cord from both the laptop and AC adapter (wall outlet) and then reconnect.
6. Replace the AC adapter if it’s worn or damaged.
7. Check the laptop’s internal operating settings and reset them, if necessary.