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DevicesKeyboard and touchpad
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 115.