3100  (250-1632)          Video Troubleshooting        Faxback Doc. # 5510

Following are some symptoms of video problems with possible solutions:

No Display

-The video settings selected through the setup utility are not correct.
 Refer to the "Utilities" section.

-Turn on the computer and monitor.

-Readjust the brightness and/or contrast controls.

-Plug system cords in securely.

-Set related switches and jumpers correctly.

Display rolls horizontally or vertically

-Be sure to install the correct video drivers for your monitor.

Image is offset on monitor

-Adjust the monitor centering.  Refer to your monitor documentation.

Distorted images or a blank screen when you run your software.

-The software is not configured for the current video configuration.
 Reconfigure the software for VGA or EGA video.

-The software is not compatible with the current video configuration.  Run
 the CLMODE utility to set the video to a standard supported by the
 software.  Refer to the "Utilities" section.

Inability to display super VGA graphics modes

-Run the CLMODE utility to set the appropriate frequency for using your
 monitor with these modes.  Refer to your monitor documentation and the
 "Utilities" section.

-Check that the maximum video resolution option of the setup utility
 supports the mode you want to use.

-Run the setup utility to set the appropriate frequency and refresh rate
 for your monitor.  Refer to your monitor documentation and the
 "Utilities" section for frequency information.

-Some Super VGA graphics modes require 1MB of video memory.  Refer to
 the table in "Super Video Modes" to check whether you must install a
 video memory upgrade to use the selected mode.

(smc 01/04/94)