If you’ve got a second screen connected to your Windows computer, either a projector or a screen by the side, Windows makes it easy to change your second screen or projector display mode. All you have to do is remember P (for projector). To switch between display modes simply press Windows + P.
- PC screen only uses your current display.
- Duplicate shows your desktop on both your current display and a connected projector.
- Extend splits the image between the two displays. This is useful for displaying your presentation on the projector while displaying your speaking notes on the PC.
- Show second screen only turns off the current display and displays the desktop only on the projector.
If you can’t see anything on the projector make sure the display mode is set to Duplicate Desktop on Projector. The new setting will take effect straight away.