1.Press the Source button on the projector repeatedly to cycle through the available sources. Wait a few seconds for an image to appear.
2.Turn on the connected computer or video source, and press its play button to begin your presentation, if necessary.
3.Check the connection from the projector to your video sources.
If necessary, turn the projector and the connected computer or video source off and then on again.
If the other solutions do not solve the problem, reset all of the settings using the Reset menu.