Supervisor Password; How To Remove The Power-On Password; How To Remove The Hard-Disk Password - Lenovo ThinkPad Edge E420s Hardware Maintenance Manual

Note: There are two modes for the HDP: User only and Master + User. The Master + User mode requires
two HDPs; the system administrator enters both in the same operation. The system administrator then
provides the user HDP to the system user.
Attention: If the user HDP has been forgotten, check whether a master HDP has been set. If it has, it can be
used for access to the hard disk drive. If no master HDP is available, neither Lenovo nor Lenovo authorized
service technicians provide any services to reset either the user or the master HDP, or to recover data from
the hard disk drive. The hard disk drive can be replaced for a scheduled fee.
For how to remove the POP, see "How to remove the hard-disk password" on page 43.

Supervisor password

A supervisor password (SVP) protects the system information stored in the ThinkPad Setup. The user must
enter the SVP in order to get access to the ThinkPad Setup and change the system configuration.
Attention: If the SVP has been forgotten and cannot be made available to the service technician, there is no
service procedure to reset the password. The system board must be replaced for a scheduled fee.

How to remove the power-on password

To remove a POP that you have forgotten, do the following:
(A) If no SVP has been set:
1. Turn off the computer and disconnect the ac power adapter.
2. Remove the battery pack. For how to remove the battery pack, see "1090 Battery pack" on page 68.
3. Remove the backup battery. For how to remove the backup battery, see "1050 Backup battery" on
page 65.
4. Connect the ac power adapter and turn on the computer. Wait until the POST ends. After the POST
ends, the password prompt does not appear. The POP has been removed.
5. Reinstall the backup battery and the battery pack.
(B) If an SVP has been set and is known by the service technician:
1. Turn on the computer.
2. When the ThinkPad logo comes up, immediately press F1.
3. Type in the supervisor password to enter ThinkPad Setup.
4. Select Security, using the cursor directional keys to move down the menu.
5. Select Password.
6. Select Power-On Password.
7. Type the current SVP in the Enter Current Password field. then leave the Enter New Password field
blank, and press Enter twice.
8. In the Changes have been saved window, press Enter.
9. Press F10; then, in the Setup Notice window, select Yes.

How to remove the hard-disk password

Attention: If User only mode is selected and the user HDP has been forgotten and cannot be made
available to the service technician, neither Lenovo nor Lenovo authorized service technicians provide any
services to reset the user HDPs or to recover data from the hard disk drive. The hard disk drive can be
replaced for a scheduled fee.
To remove a user HDP that has been forgotten, when the SVP and the master HDP are known, do the
following:
.
Chapter 4 Related service information
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