If only a partial computer image appears, try the
Auto button on the remote control to
optimize the image signal.
adjusting the image position using the Position menu setting.
Aspect button on the remote control
to select a different image aspect ratio.
zoomed into or out of the image using the E-Zoom buttons, press the Esc button until the projector returns to a full
cables connecting the computer or video source to the projector.
Try connecting different cables.
computer display settings to disable dual display and set the
resolution within the projector's limits. (See your computer manual
resolution assigned to your presentation files to see if they are
created for a different resolution than you are projecting in. (See
your software help for details.)