Troubleshooting Charts
Problem
Action
The mouse buttons don't
work.
Change the mouse driver to Standard PS/2 Port Mouse, and then reinstall
PS/2 TrackPoint. See “Advanced” in the
Online User's Guide
for how to install
the driver.
A number appears when
you type a letter.
The numeric lock function is on. To disable it, press and hold Shift; then press
NumLk.
All or some keys on the
external numeric keypad
do not work.
Make sure that the external numeric keypad is correctly connected to the
computer.
All or some keys on the
external keyboard do not
work.
To use an external keyboard, you need to attach the keyboard/mouse connector
to the computer. Make sure that:
The keyboard/mouse connector is correctly connected to the computer.
The keyboard connector is connected to the correct side of the
keyboard/mouse connector.
If these items are correct, disconnect the keyboard/mouse connector from the
computer and make sure that the operation of the system keyboard is correct. If
the system keyboard works, have the keyboard/mouse connector or the external
keyboard serviced.
Suspend or Hibernation Problems
Problem
Action
The computer enters
suspend mode
automatically.
The computer enters suspend mode automatically when the processor
temperature reaches a certain level.
This is not a defect.
The computer enters
suspend mode
immediately after POST
(the suspend lamp turns
on).
Make sure that:
The battery pack is charged.
The operating temperature is within the acceptable range. Refer to
Appendix A.
If these items are correct, have the computer serviced.
Error
19
appears and the
computer immediately
powers off.
The battery pack power is getting low. Connect the AC Adapter to the
computer, or replace the battery pack with a fully charged one.
Chapter 4. Solving Computer Problems
113
Title: C79FPMST CreationDate: 06/22/98 12:26:52
