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P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1800 S
ERIES
T
ROUBLESHOOTING
23
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Display Solutions
This section lists some causes and solutions for common Notebook display and external
monitor problems.
You can perform a monitor self-test on an external VGA color or monochrome monitor
by completing the following steps:
1.Turn off the monitor.
2.Turn off the Notebook.
3.Disconnect the monitor signal cable from the Notebook.
4.Turn on the monitor and allow it to warm up for one minute.
The display should be white. A narrow black border may also appear on the left and right
sides of the display. Either of these displays indicates that the monitor is working
properly.
Diskette drive cannot
read a diskette.
Diskette is not formatted. Format the diskette. At the
system prompt, enter
FORMAT A:
Cannot boot from
diskette.
Bootable diskette is not in the
diskette drive.
Put the bootable diskette in the
diskette drive.
Diskette Boot has incorrect
setting in Setup.
Run Setup and set diskette as first
to boot.
Display
Problem Probable Cause Solution(s)
Screen is dim. Brightness control
(if applicable) is not set
properly.
Adjust the display brightness by
using Fn+F7 or Fn+F8.
The Notebook display is in
direct sunlight.
Tilt the display or move the
Notebook.
Screen is blank. Screen saver was initiated or
display was turned off by
Power Management due to
lack of user activity.
Press any key or touch the
TouchPad.
Diskette Drive
Problem Probable Cause Solution(s)