The Projector Is Unable To Detect The Inputs
Try Switching To A Different Input
The issue could be either software or hardware. Try switching to a different input, for example, use your laptop to plug into the VGA or HDMI port you previously were not using. Make sure that your projector is on the right display mode. Sometimes, broken remotes or broken buttons on the projector will prevent you from switching to the correct input, so test these too.
Software Is The Cause Of Your Input Issues
If you have confirmed that the projector’s hardware or software is the cause of your input issue, it is likely that the interface board may need replacement.