PowerLite 1815p Multimedia Projector

Make sure the correct input signal is selected in the Signal menu. It should normally be set to Auto, unless you are using a 60-Hz PAL system (select PAL60). See Adjusting Signal Settings for details.

Make sure your computer’s resolution doesn’t exceed UXGA (1600 × 1200) and the frequency or refresh rate is supported by the projector. See Compatible Video Formats for a list of compatible resolution settings. If necessary, change your computer’s resolution setting.