If you are projecting a 4x3 resolution, it should match both the height and width of the projector's test image.On a 4x3 screen with computer set for a 4x3 resolution Below is what to expect when the resolutions match and don't match. At least one of them should match the projector's resolution. Check the computer resolution and the powerpoint resolution.
If the neither the height nor the width are filled, the projector has been physically moved too far or too close. This is the maximum image size the projector can produce when zoomed out. Note the size of the projector's blue (test) image that appears when it first turns on.(you need the remote for this) Sometimes the projector zoom may have been inadvertently adjusted. Ensure that the projector is fully zoomed out.Note down: Is the computer connected using VGA or HDMI? HDMI will usually automatically select the correct computer resolution, whereas VGA may choose the wrong resolution.The steps below will help technical staff determine the cause and recommend a solution. So the easiest solutions will involve changing the computer or powerpoint resolution. Note that it is not possible to change the projector's resolution (without installing a new projector and a new screen, both of which are expensive and time intensive processes). There can be several reasons for this: the computer resolution and the projector resolution do not match, the powerpoint resolution and the projector resolution do not match, neither computer resolution nor powerpoint resolution match the projector resolution. It is possible that the projected image does not completely fill the screen.
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