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United States January 2, 2003
Maintenance & Service Guide
Presario 1600 Series Portable Computers
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Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack
Touch Pad Solutions
Solving Minor Problems
Some minor problems and possible solutions are outlined here. If the
problem appears related to a software application, check the documentation
provided with the software.
Solving Touch Pad/Pointing Device Problems
Some common causes and solutions for Touch Pad/pointing device problems
are listed in the following table.
Solving Touch Pad/Pointing Device Problems
Problem Cause Solution(s)
Touch Pad or mouse does not work. Incorrect or no device driver
is installed.
Install the device driver
and add to the
AUTOEXEC.BAT file or
CONFIG.SYS file.
The device driver is not
installed in Windows.
Install the Touch
Pad/mouse driver in
Windows.
External mouse does not work. Mouse is not securely
connected or is connected to
an incorrect external
connector.
Ensure that the mouse is
securely connected to the
appropriate external
connector.
Touch Pad or mouse does not work
even though the device is enabled in
Windows.
Mouse is not enabled. Enter SYNTOUCH.COM at
the system prompt to
activate the mouse device
driver.(C:\WINDOWS\
DOSSTART.BAT)
Add a line in the
AUTOEXEC.BAT file to
automatically activate the
mouse device driver each
time computer is turned on
or restarted.
Cable not properly seated in
Touch Pad board.
Reseat cable.
Defective Touch Pad board. Replace Touch Pad board.
Defective system board. Replace system board.
Device driver is not correctly
installed in Windows.
Install the appropriate
device driver in Windows.
Cursor skips or moves abnormally
when using the Touch Pad.
The Touch Pad needs to be
cleaned.
Clean the Touch Pad with a
cloth dampened with
alcohol or an ammonia-
based glass cleaner. Wipe
up liquid with a dry cloth.
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