Switching from Extended to Duplicated Display Mode

🔄 What’s the Difference?

Extended Mode: Treats each screen as a separate display. Great for multitasking but confusing during presentations.
Duplicate Mode: Mirrors your main screen onto the projector or second monitor. Ideal for teaching and presentations.

🔍 Symptoms That Suggest You Need Duplicate Mode

Instructors may need to switch to Duplicate mode if they experience any of the following:

The projector or classroom screen is blank or shows only the desktop wallpaper.
The mouse cursor disappears when moved to the projector screen.
The presentation or video is visible only on the instructor’s monitor, not the classroom screen.
Students say they can’t see what’s being presented.
The instructor is dragging windows to the side to make them appear on the projector.

🛠️ How to Switch to Duplicate Mode (Windows)

Press Windows Key + P on your keyboard.
A sidebar will appear with display options.
Select Duplicate from the list:
- PC screen only
- Duplicate ✅
- Extend
- Second screen only
Your screen should now mirror to the projector or second monitor.

💡 Tip: If nothing appears on the projector after selecting Duplicate, check that the projector is powered on and the correct input source is selected.

🧪 Optional: Test It Before Class

Encourage instructors to test their display setup before class begins. A quick Windows + P check can save time and confusion.