Your computer may be set to a different resolution then your projector's resolution. It is always best if the resolution selected in your display settings matches your projector. If you're not sure what resolution your projector is, just switch you display settings and see if the image improves. Although most projector will project an image when the computer is set to a different resolution, the quality of the image usually degrades. For instance, we have found that with 800 x 600, the best settings are 60 or 72.
Most projector have a reset.
You can always start over. A standardized measurement of the brightness of a computer projector. Yes, most projector come with cabling and adapters to connect to both IBM compatibles and Mac computers. A document camera allows you to project two or three dimensional objects, such as correspondence, industrial parts or legal evidence. A wireless, handheld, remote device that allows you to control your computer mouse.