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112 Chapter 4
Note: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined
Battery fuel gauge in Windows doesn’t go
higher than 90%.
Remove battery pack and let it cool for 2 hours.
Refresh battery (continue use battery until power off, then
charge battery).
Battery pack
System board
System hangs intermittently. Reconnect hard disk/CD-ROM drives.
Hard disk connection board
System board
Peripheral-Related Symptoms
Symptom / Error Action in Sequence
System configuration does not match the
installed devices.
Enter BIOS Setup Utility to execute “Load Default Settings”,
then reboot system.
Reconnect hard disk/CD-ROM/diskette drives.
External display does not work correctly. Press Fn+F5, LCD/CRT/Both display switching
System board
USB does not work correctly System board
Print problems. Ensure the “Parallel Port” in the “Onboard Devices
Configuration” of BIOS Setup Utility is set to Enabled.
Onboard Devices Configuration
Run printer self-test.
Printer driver
Printer cable
Printer
System Board
Serial or parallel port device problems. Ensure the “Serial Port” in the Devices Configuration” of
BIOS Setup Utility is set to Enabled.
Device driver
Device cable
Device
System board
Keyboard/Touchpad-Related Symptoms
Symptom / Error Action in Sequence
Keyboard (one or more keys) does not
work.
Reconnect the keyboard cable.
Keyboard
System board
Touchpad does not work. Reconnect touchpad cable.
Touchpad board
System board
Modem-Related Symptoms
Symptom / Error Action in Sequence
Internal modem does not work correctly. Modem phone port
modem combo board
System board
Power Management-Related Symptoms
Symptom / Error Action in Sequence