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155
Devices
Keyboard and touchpad
The battery fuel gauge in Windows doesn’t
go higher than 90%.
• Remove the battery pack and let it cool for two hours.
• Refresh the battery (use only battery power until the notebook
turns off, then charge the battery).
• Test or replace the battery pack.
• Test or replace the system board.
The system hangs intermittently. • Reconnect the hard disk drive and optical drive.
• Check the hard disk connection to the system board.
• Test or replace the system board.
Symptom / Error Action in Sequence
System configuration does not match the
installed devices.
• Run “Load Setup Defaults” using the BIOS Setup Utility, then
reboot the notebook.
• Reconnect the hard disk drive and optical drive.
The external display does not work
correctly.
• Press Fn+F4 repeatedly to switch between LCD, external
display, and both displays.
• Test or replace the system board.
USB does not work correctly. • Test or replace the USB board.
• Test or replace the system board.
Printer problems. • Run the printer self-test.
• Reinstall the printer driver.
• Test or replace the printer cable.
• Test or replace the printer.
• Test or replace the system board.
Symptom / Error Action in Sequence
The keyboard (one or more keys) does not
work.
• Reconnect the keyboard cable.
• Test or replace the keyboard.
• Test or replace the system board.
The touchpad does not work. • Reconnect the touchpad cable.
• Test or replace the touchpad board.
• Test or replace the system board.
Important
If you cannot find a symptom or an error in this list and the problem
remains, see “Undetermined problems” on page 157.
Symptom / Error Action in Sequence