Lenovo manual Select Master HDP, ThinkPad T420 and T420i Hardware Maintenance Manual

2.When the ThinkPad logo comes up, immediately press F1 to enter the ThinkPad Setup program. When the POP icon is appearing on the screen, enter the POP.

3.Select Security, using the cursor directional keys to move the menu.

4.Select Password.

5.Select Hard-diskx password, where x is the letter of the hard disk drive. A pop-up window opens.

6.Select Master HDP.

7.Type the current master HDP in the Enter Current Password field. then leave the Enter New Password field blank, and press Enter twice.

8.Press F10.

9.Select Yes in the Setup Configuration window. Both user HDP and master HDP will have been removed.

40ThinkPad T420 and T420i Hardware Maintenance Manual