Windows Computer

If the projector is on and the HDMI cable connected and nothing is displaying

• Windows Key+P to duplicate the laptop screen
   + P
  
  
• If in PowerPoint, begin the SlideShow presentation. Even if it isn't displaying from PowerPoint, it may project when a slide show is started.
• Reboot with the HDMI cable plugged in
• If using a display adapter, plug the adapter into the HDMI cable before plugging the adapter into the computer

Apple Computer

• Command+F1 to mirror (duplicate) the laptop screen (or to turn off mirroring)
   + F1
  
  
• To add the mirroring to the menu bar open the Apple Menu->System Preferences->Display
  • Click the Arrangement tab
  • Set to Mirror Displays
  • Show Mirroring Options on menu for future use if it is unchecked

• If using a display adapter, plug the adapter into the HDMI cable before plugging the adapter into the computer