IBM THINKPAD L460, Hardware Maintenance Manual

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4. Reinstall the coin-cell battery. For instructions on how to install the coin-cell battery, see “1130 Coin-cell
battery” on page 84.
5. Reinstall the external battery pack. For instructions on how to install the external battery pack, see
“1020 External battery pack” on page 62.
6. Turn on the computer and wait until the power-on self-test (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 logo screen comes up, immediately press the speaker-mute key .
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 the search key to save changes and exit the ThinkPad Setup program.
How to remove the hard disk password
Attention: If User only mode is selected and the user hard disk password 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 hard disk passwords or to recover data from the hard disk drive. To put the
system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to
replace the hard disk drive or solid-state drive with a scheduled fee.
To remove a user hard disk password that has been forgotten, when the supervisor password and master
hard disk password are known, do the following:
1. Turn on the computer.
2. When the logo screen comes up, immediately press the speaker-mute key to enter the ThinkPad
Setup program.
3. Select Security .
4. Select Password .
5. Select Hard disk x password , where x is the letter of the hard disk drive. A pop-up window opens.
6. Select Master hard disk password .
7. Type the current master hard disk password in the Enter Current Password field. Then leave the Enter
New Password field blank, and press Enter twice.
8. Press the search key to save changes and exit the ThinkPad Setup program. The user hard disk
password and the master hard disk password have been removed..
Power management
To reduce power consumption, the computer has three power management modes: screen blank, sleep,
and hibernation.
Chapter 4
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Related service information
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