Virtually all IBM and Lenovo ThinkPad and ThinkCenter laptops allow you to hook up an additional monitor or projector to the computer. When you add an external monitor or projector to your notebook, you can choose to view the display on the computer, on the external device, or on both the laptop and the external monitor or projector at the same time. Toggling between viewing devices is as simple as pressing a couple of keys on the keyboard.
Shut down the laptop. Plug the VGA monitor cable from the external monitor or projector into the blue VGA port on the back of the computer.
Turn on the external monitor or projector first, and then the Lenovo laptop. Allow the notebook to boot into Windows normally.
Press the "Fn" and "F7" keys at the same time to switch the display from the laptop to the external monitor or projector.
Press the "Fn" and "F7" keys again to enable the display on both the laptop and the external display device.
Press the "Fn" and "F7" keys again to display screen contents only on the laptop LCD.