What should I do if I see static or noise in the image?
Check the following:
If you’re using a computer cable longer than 6 feet, or an extension cable, the image quality may be reduced.
Keep your computer and video cables away from the power cord as much as possible to prevent interference.
The video signal may be split between the computer and the projector. If you notice a decline in the projected image quality when the image is displayed simultaneously on your notebook computer and the projector, turn off the notebook’s LCD display.