Compaq Evo D300 Troubleshooting Manual page 31

Solving Display Problems (Continued)
Problem
Blurry video or requested
resolution cannot be set.
Screen goes blank.
The picture is broken up,
or it rolls, jitters, or flashes.
Monitor overheats.
Troubleshooting Guide
Cause
If the graphics
controller was
upgraded, the correct
graphics drivers may
not be loaded.
Monitor is not capable
of displaying requested
resolution.
You may have a screen
blanking utility installed
or energy saver
features are enabled.
The monitor
connections may be
incomplete or the
monitor may be
incorrectly adjusted.
There is not enough
ventilation space for
proper airflow.
Troubleshooting Without Diagnostics
Solution
Install the video drivers on the
diskette included in the upgrade kit.
Change requested resolution.
Press any key or type password.
1. Be sure the monitor cable is
securely connected to the
computer.
2. In a 2-monitor system or if
another monitor is in close
proximity, be sure the monitors
are not interfering with each
other's electromagnetic field by
moving them apart.
3. Fluorescent lights or fans may
be too close to the monitor.
Leave at least 3 inches (7.6 cm) of
ventilation space. Be sure there is
nothing sitting on top of the monitor
obstructing the air flow.
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