Table of Contents
Advertisement
Table 2-25 Solving Display Problems
Problem
External monitor does not
display information.
Small red, green, or blue
spots appear on the
computer CTFT display.
Display on an external
monitor is distorted.
The image has a black
border and does not fill the
screen.
Computer screen and
external monitor do not
display information
simultaneously.
Unrecognizable characters on
internal display or flashing
internal display when
connected to external
monitor.
2-32 Troubleshooting
Continued
Probable Cause
External monitor was
connected after the computer
was turned on.
The external monitor signal
cable or power cord is not
properly connected.
Small spots, called on-pixels,
often appear on CTFT
screens. Compaq limits the
number of these on-pixels to
0.003 percent.
Incorrect display device
drivers are installed or
incorrect resolution is set.
The external monitor is not
Energy Star compliant, but
monitor energy saving
feature is enabled.
The Desktop Area setting is
smaller than the Resolution
setting.
Display was switched using
the hotkeys.
External monitor was not
turned on before the system
was turned on.
External monitor was
connected after the computer
was turned on.
Toggled to internal monitor
from an external monitor that
is using higher resolution
than that supported by the
computer.
Recommended Action(s)
Press the Fn+F4 hotkeys to switch to the
external monitor.
Ensure that the cables are properly
connected.
No action is required.
Double-click the Display icon in Control
Panel, click the Settings tab, and set the
correct display type and resolution for the
external monitor.
Complete these steps:
1. Press any key or move the pointing
device to restore the display.
2. If display remains distorted, turn off the
monitor, then turn it on again.
3. Disable the monitor energy saving
feature in Display Properties or in
Computer Setup Power Management.
Adjust the settings for the Desktop Area and
Resolution. Double-click Control Panel
Display
Settings
Compaq.
Press the Fn+T keys to expand the image.
Initiate Suspend, connect the external
monitor, and turn on the monitor, then exit
Suspend.
Initiate Suspend, connect the external
monitor, and turn on the monitor, then exit
Suspend.
Restart the system. If simultaneous display
is desired, use the resolution supported by
the computer.
Advertisement
Table of Contents
