A projector can double as a secondary monitor when you connected it to your PC. This setup enables you to extend or duplicate your computer's display onto a massive canvas, so that you can view your ...

When you first turn on your projector, you may be surprised to find there's no picture from your computer. By default, Windows does not feed images to the screen and video out ports at the same time.

Before you attempt to mirror to a TV, be sure the TV and the laptop are connected to the same network. Can't go wireless? Connect the HDMI cable to your laptop and your TV. MacBooks can use an adapter ...