Intergraph GLZ6, Setup & Maintenance Manual

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20 Chapter 2 - Maintaining the System
Problem Action
The Dual Screen option is selected, but
only one board set is detected, though
two board sets are installed. Verify proper installation of
the board sets.
The Dual Screen option is selected, but
video between the two monitors is not
in sync. Ensure the clock sync cable is
properly connected between
the board sets.
A black line, rolling vertically, is
visible on the screen(s). Ensure the clock sync cable is
properly connected between
the board sets.
No VGA bootup screen. Ensure VGA loopback cable is
properly connected between
the graphics tower and base
unit.
Note: If you must reinstall the display driver, refer to “Installing the GL
Display Driver,” in this chapter. If video problems persist, contact
the Customer Response Center at 1-800-633-7248.
Obtaining a Usable Video Display
There are two methods for obtaining a usable display: restarting the system
in VGA mode, or using the Last Known Good configuration in Windows
NT.
If you select a resolution that causes the monitor to display incorrectly, do
not press
CTRL
+
ALT
+
DEL
to logoff Windows NT; instead, restart the system
and use the Last Known Good option to correct the display problem.
➤
To use the Last Known Good configuration option:
1. Restart the workstation.
2. Select the Last Known Good configuration in Windows NT by
pressing the space bar at the following prompt:
Press space bar NOW to invoke the Last Known Good Menu
Note: All configuration changes made since your system was last booted
are lost.