Lenovo 20AA000955, Hardware Maintenance Manual

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How to remove the power-on password
To remove the power-on password, do one of the following:
If no supervisor password has been set, do the following to remove the power-on password:
1. Turn off the computer.
2. Remove the battery. For instructions on how to remove the battery, see “1080 Built-in battery” on page
79.
3. Remove the coin-cell battery. For instructions on how to remove the coin-cell battery, see “1090 Coin-
cell battery” on page 81.
4. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt will not
be displayed. The power-on password has been removed.
5. Reinstall the coin-cell battery and the battery.
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 UEFI BIOS menu.
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.
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 password, or to recover data from the solid-state drive. The solid-
state drive can be replaced for a scheduled fee. To put the system back to operational status, the only
Lenovo and Lenovo-authorized service solution would be to replace the solid-state drive with a scheduled
fee.
To remove a user hard disk password that has been forgotten, when the supervisor password and the
master hard disk password are known, do the following:
1. Turn on the computer.
2. When the logo screen is displayed, immediately press F1 to enter the UEFI BIOS menu.
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 HDP , where HDP stands for 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 F10 to save changes and exit. The user hard disk password and the master hard disk password
have been removed.
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T490s and X390 Hardware Maintenance Manual