Maintenance &
Service Guide
Presario 1600 Series Portable Computers
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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.
| 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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