Solving Touchpad/Pointing Device Problems - Compaq 1600XL Maintenance & Service Manual

Model 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144,
1600-XL146, 1600-XL147, 1600-XL150 XL156, XL157, XL255, XL256, XL257, and XL258

Solving TouchPad/Pointing Device Problems

The following table lists some common causes and solutions for TouchPad/pointing device
problems.
Problem
TouchPad or mouse
does not work.
External mouse does
not work.
TouchPad or mouse do
not work even though
the device is enabled
in Windows.
Cursor skips or moves
abnormally when using
the TouchPad.
36 T
ROUBLESHOOTING
Presario 1600XL Series
Solving TouchPad/Pointing Device Problems
Probable Cause
Incorrect or no device driver
is installed.
The device driver is not
installed in Windows.
Mouse is not securely
connected or is connected to
an incorrect external
connector.
Mouse is not enabled.
Cable is not properly seated
in TouchPad board.
Defective TouchPad board.
Defective system board.
Device driver is not correctly
installed in Windows.
The TouchPad needs to be
cleaned.
P
RESARIO
Solution(s)
Install the device driver and add
to the AUTOEXEC.BAT file or
CONFIG.SYS file.
Install the TouchPad/mouse driver
in Windows.
Ensure that the mouse is securely
connected to the appropriate
external connector.
Type MOUSE at the system
prompt to activate the mouse
device driver.
Add a line in the AUTOEXEC.BAT
file to activate the mouse driver
automatically each time the
computer is turned on or
restarted.
Reseat cable.
Replace the TouchPad board.
Replace system board.
Install the appropriate device
driver in Windows.
Clean the TouchPad with a cloth
dampened with alcohol or an
ammonia-based glass cleaner.
Wipe up liquid with a dry cloth.
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OTEBOOK AINTENANCE AND
G 1600XL S
ERVICE UIDE ERIES