Supervisor Password; How To Remove The Power-On Password - Lenovo ThinkPad T550 Hardware Maintenance Manual

Note: There are two modes for the hard disk password: User only and Master + User. The Master + User
mode requires two hard disk passwords; the system administrator enters both in the same operation. The
system administrator then provides the user hard disk password to the system user.
Attention: If the user hard disk password has been forgotten, check whether a master hard disk password
has been set. If it has, it can be used for access to the hard disk drive. If no master hard disk password is
available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either
the user or the master hard disk password, 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 hard disk password, see "How to remove the hard disk password" on page 34.

Supervisor password

A supervisor password protects the system information stored in the ThinkPad Setup. The user must enter
the supervisor password in order to get access to the ThinkPad Setup and change the system configuration.
Attention: If the supervisor password 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 power-on password, do the following:
If no supervisor password has been set, do the following to remove the power-on password:
1. Turn off the computer and disconnect ac power.
2. Disable the built-in battery. See "Disabling the built-in battery" on page 56.
3. Remove the removable battery. See "1010 Removable battery" on page 57.
4. Remove the base cover assembly. See "1020 Base cover assembly" on page 57.
5. Remove the coin-cell battery. See "1090 Coin-cell battery" on page 69.
6. Reinstall the coin-cell battery. See "1090 Coin-cell battery" on page 69.
7. Reinstall the base cover assembly.
8. Reinstall the removable battery.
9. Reconnect ac power.
10. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt does
not appear. The power-on password has been removed.
If a supervisor password has been set and is known to the service technician, do the following to remove
the power-on password:
1. Turn on the computer.
2. When the ThinkPad logo is displayed, immediately press F1.
3. Type the supervisor password to enter the ThinkPad Setup program.
4. Select Security.
5. Select Password.
6. Select Power-On Password.
7. Type the current supervisor password 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 to save changes and exit the ThinkPad Setup program. The power-on password has
been removed.
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Chapter 4 Related service information
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