1 Locate the password jumper (P215) on the system board.
For information on the location of the Password jumper, see System-board
2 Remove the jumper plug from pins 215.
3 Follow the procedure from step 8 to step 9 in "Replacing the power-supply
4 Replace the left-side cover.
5 Turn on your computer and wait until the operating system is completely
6 Shut down your computer.
7 Remove the left-side cover.
8 Follow the procedure from step 1 to step 3 in "Removing the power-supply