2.Insert the Operating System Recovery Disc into the DVD drive.

3.Press F10 to save the ThinkPad Setup program configuration changes. Follow the instructions on the screen to begin the recovery process.

4.Select your language and click Next.

5.Read the license. If you agree with the terms and conditions, select I accept these terms and conditions and then click Next. If you do not agree with the terms and conditions, follow the instructions on the screen.

6.Click Yes in the displayed window to begin the operating system recovery process.

7.Insert the Applications and Drivers Recovery Disc when prompted and then click OK to begin the applications and drivers recovery process.

8.If you have a Supplemental Recovery Disc, insert it when prompted and click Yes. If you do not have a Supplemental Recovery Disc, click No.

9.When all of the data has been copied from the last disc in the set and has been processed, remove the disc and restart the computer.

Note: The rest of the recovery process is fully automated and no action is required by you. The computer will restart into the Microsoft Windows desktop several times and you might experience periods when no activity is apparent on the screen for several minutes at a time. This is normal.

10.When the recovery process is complete, the Set Up Windows screen is displayed. Follow the instructions on the screen to complete the Windows setup.

11.After you have completed the Windows setup, you might want to restore the original startup sequence. Start the ThinkPad Setup program and then press F9 to restore the default settings. Press F10 to save and exit the ThinkPad Setup program.

Note: After restoring a drive to the factory default settings, you might need to reinstall some device drivers.

Passwords

As many as three passwords may be needed for any ThinkPad Notebook: the power-on password (POP), the hard-disk password (HDP), and the supervisor password (SVP).

If any of these passwords has been set, a prompt for it appears on the screen whenever the computer is turned on. The computer does not start until the password is entered.

Note: If only an SVP is installed, the password prompt does not appear when the operating system is booted.

Power-on password

A power-on password (POP) protects the system from being powered on by an unauthorized person. The password must be entered before an operating system can be booted. For how to remove the POP, see “How to remove the power-on password” on page 39.

Hard-disk password

There are two hard-disk passwords (HDPs):

User HDP—for the user

Master HDP—for the system administrator, who can use it to get access to the hard disk even if the user has changed the user HDP

Note: There are two modes for the HDP: User only and Master + User. The Master + User mode requires two HDPs; the system administrator enters both in the same operation. The system administrator then provides the user HDP to the system user.

38ThinkPad T420 and T420i Hardware Maintenance Manual

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Lenovo T420i manual Passwords, Power-on password, Hard-disk password