Lenovo ThinkPad T450 (English) Hardware Maintenance Manual - ThinkPad T450 - Page 39

Passwords, Power-onpassword, Harddiskpassword

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Attention: If you delete the recovery partition on your computer, do keep the recovery media in a safe place. The Windows recovery image will not be stored in your computer anymore, and you will need the recovery media to refresh or reset your computer. 8. Remove the USB drive. The recovery media are created successfully. Using recovery media If you cannot start your computer, or if you cannot start the Windows recovery image on your computer, use recovery media to recover your computer. To use recovery media, do the following: Note: Ensure that your computer is connected to ac power. 1. Turn on or restart the computer. Before the Windows operating system starts, repeatedly press F12. The Boot Menu window opens. 2. Select the recovery drive as the boot device. 3. Select a preferred language and then select a preferred keyboard layout. 4. Click Troubleshoot to display the optional recovery solutions. 5. Select a corresponding recovery solution according to your situation. For example, select Reset your PC if you want to reset your computer to the factory default settings. For more information about the recovery solutions provided by the Windows 8 and Windows 8.1 operating systems, go to: http://go.microsoft.com/fwlink/?LinkID=263800 Passwords As many as three passwords may be needed for any ThinkPad notebook computer: the power-on password, the hard disk password, and the supervisor password. If any of these passwords has been set, a prompt for it will be displayed on the screen whenever the computer is turned on. The computer does not start until the password is entered. Note: If only a supervisor password is set, the password prompt will not be displayed when the operating system is started. Power-on password A power-on password protects the system from being powered on by an unauthorized person. The password must be entered before an operating system can be started. For instructions on how to remove the power-on password, see "How to remove the power-on password" on page 34. Hard disk password There are two kinds of hard disk passwords: • User hard disk password - for the user • Master hard disk password - for the system administrator, who can use it to get access to the hard disk even if the user has changed the user hard disk password 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. Chapter 4. Related service information 33

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Attention:
If you delete the recovery partition on your computer, do keep the recovery media in a
safe place. The Windows recovery image will not be stored in your computer anymore, and you will
need the recovery media to refresh or reset your computer.
8. Remove the USB drive. The recovery media are created successfully.
Usingrecoverymedia
If you cannot start your computer, or if you cannot start the Windows recovery image on your computer, use
recovery media to recover your computer.
To use recovery media, do the following:
Note:
Ensure that your computer is connected to ac power.
1. Turn on or restart the computer. Before the Windows operating system starts, repeatedly press F12. The
Boot Menu window opens.
2. Select the recovery drive as the boot device.
3. Select a preferred language and then select a preferred keyboard layout.
4. Click
Troubleshoot
to display the optional recovery solutions.
5. Select a corresponding recovery solution according to your situation. For example, select
Resetyour
PC
if you want to reset your computer to the factory default settings.
For more information about the recovery solutions provided by the Windows 8 and Windows 8.1 operating
systems, go to:
Passwords
As many as three passwords may be needed for any ThinkPad notebook computer: the power-on password,
the hard disk password, and the supervisor password.
If any of these passwords has been set, a prompt for it will be displayed on the screen whenever the
computer is turned on. The computer does not start until the password is entered.
Note:
If only a supervisor password is set, the password prompt will not be displayed when the operating
system is started.
Power-onpassword
A power-on password protects the system from being powered on by an unauthorized person. The
password must be entered before an operating system can be started. For instructions on how to remove
the power-on password, see “How to remove the power-on password” on page 34.
Harddiskpassword
There are two kinds of hard disk passwords:
• User hard disk password - for the user
• Master hard disk password - for the system administrator, who can use it to get access to the hard disk
even if the user has changed the user hard disk password
Note:
There are two modes for the hard disk password:
Useronly
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.
Chapter 4
.
Related service information
33