So you have plugged a projector into your laptop and you are not getting the video displayed. On most laptops you will have have to manually switch the video output on.


Switching video outputs on laptops

Most laptops have three video modes available by using the key combinations. Pressing the key combination on the laptop will cycle through the modes.


  1. Screen only (default)
  2. Clone (output to both screen and external video)
  3. External Video only


Some common key combinations. (Not all laptops use the same combination for switching displays)




FN + F4




FN + F8




FN + F6