If you are trying to use your projector and receive a No Signal error message, you may need to check the display settings on your computer. To do this, turn on your projector and follow the steps below:
Right Click in the blank space of your desktop wallpaper and select the Display Settings (Screen Resolution on Windows 7) menu item.
In the Display Settings menu, click the detect button as shown in the example:
If there is an available display for your computer to detect, you will see another monitor with a 2 on it display in the menu. If the computer does not detect another display device, you will need to ensure that your cables are securely connected.
If you do not like how your computer is displaying your screens, please visit the article in the link below for instructions on how to change your display method: