Mirroring a Laptop Display to the Projector
When the computer and projector are powered on and connected, both should display the same image, although many times the laptop will need to be mirrored manually.
This can be done in a few different ways, the most straightforward of which is by holding down theFunction key [Fn on the bottom left of the keyboard] and pressing the F# keyat the top of the keyboard that corresponds with opening the VGA port.
The F# key used will vary from computer to computer [F7 and F8 are most common], but you can tell which one to press based on the images on the key.
Some common ones to look for are:
Choosing Apply or OK will accept any changes youhave made to the menu and open the VGA port to mirror the laptop.