Adjust the screen area of the computer’s display settings to match the projector’s native resolution. Refer to your projector documentation for the optimum or native-resolution setting for your projector model. If you can't find this information or are uncertain, most projectors support a maximum of 800 x 600 pixels.
With certain laptops, you might need to disable the laptop display to obtain the best image, especially when the native resolution of the laptop exceeds the native resolution of the projector.
Font smoothing will automatically generate a cleaner font outline, both on your laptop and on the projector. To apply font smoothing, do the following:
In Control Panel, open Display.
On the Appearance tab, click the Effects button.
In the Effects dialog box, select the Use the following method to smooth edges of screen fonts check box, and then select Standard or ClearType in the list.
If the projected image is dimmer than it was on the laptop, check your projector documentation for information regarding lamp timers. If the lamp life has expired, replace the lamp for maximum brightness.
If the projected image is not rectangular, try one or both of the following:
Make sure that the projector is perpendicular to the viewing screen.
Raise or lower the projector.
If the projected image displays vertical lines, "bleeding," or spots, try one or more of the following:
Adjust the brightness of the image.
Check the projector lens to see whether it needs cleaning.
Adjust the sync and tracking on the projector.