How To Remove The Hard Disk Password; Power Management; Sleep Mode - Lenovo ThinkPad L380 Hardware Maintenance Manual

2. Remove the battery pack. For instructions on how to remove the battery pack, see "1090 Battery pack"
on page 83.
3. Remove the coin-cell battery. For instructions on how to remove the coin-cell battery, see "1060 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 pack.
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 Fn+F10 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 password, or to recover data from the hard disk drive. The hard disk
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 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 the
master hard disk password are known, do the following:
1. Turn on the computer.
2. When the ThinkPad logo is displayed, immediately press F1 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 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 Fn+F10 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: sleep and hibernation.

Sleep mode

When the computer enters sleep mode, the following events occur in addition to what occurs in screen blank
mode:
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L380, L380 Yoga, S2 3rd Gen, and S2 Yoga 3rd Gen Hardware Maintenance Manual