To resolve the issue of your laptop not connecting to the projector, please follow these steps:

1. Ensure both the projector and laptop are properly connected and powered-on.
2. Check the HDMI cables and make sure they are pushed in securely.
3. Check that the correct video port is used for both devices. (It may be necessary to change the video port)
4. Check the display settings on the laptop to make sure that it’s set to the correct input.
5. Verify that the projector and laptop are compatible. (Some projectors require the laptop to have specific graphic hardware)
6. If all of the above solutions fail, try restarting both the laptop and projector, and then trying to connect them again.