How to Display Laptop Screen via Projector

Mac:

• Go to System Preferences (click on the Apple logo on the very top-left of the screen
  and choose System Preferences)
• Choose the “Displays” option.
• Select the “Arrangements” tab.
• Make sure the “Mirror Displays” option is enabled.

Windows:

• Minimize all windows so that you are looking at your desktop background.
• Right-click on any empty space.
• Select “Screen resolution”.
• Under the “Multiple displays” option, set it to “Duplicate these displays”.