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Chapter 10. Additional service information
This chapter provides additional information that the service representative might find helpful.
Security features
Security features in this section include the following:
• Passwords
• Vital Product Data
Hardware controlled passwords
Use the Setup Utility program to set the hardware controlled passwords. For more information about
passwords, see "Using passwords" on page 41.
Operating system password
An operating system password is very similar to a power-on password and denies access to the computer by
an unauthorized user when the password is activated. The computer is unusable until the correct password
is entered and recognized by the computer.
Vital Product Data
Each computer has a unique Vital Product Data (VPD) code stored in the nonvolatile memory on the system
board. After you replace the system board, the VPD must be updated. To update the VPD, see "Updating
(flashing) BIOS from a disc" on page 99.
BIOS levels
An incorrect level of BIOS can cause false errors and unnecessary FRU replacement. Use the following
information to determine the current level of BIOS installed in the computer, the latest BIOS available for the
computer, and where to obtain the latest level of BIOS.
• To determine the current level of BIOS:
– Start the Setup Utility program. See "Starting the Setup Utility program" on page 41.
– See BIOS Revision Level on the Main setup screen.
• Sources for obtaining the latest level BIOS available
1. Lenovo support web site: http://www.lenovo.com/support
2. Lenovo Customer Support Center
3. Levels 1 and 2 Support
To update (flash) the BIOS, see "Updating (flashing) BIOS from a disc" on page 99.
Updating (flashing) BIOS from a disc
This section provides instructions on how to update (flash) BIOS from a disc. System program updates
are available at:http://www.lenovo.com/support
To update (flash) BIOS from a disc, do the following:
1. Make sure the optical drive you want to use is set as the first boot device in the startup device sequence.
See "Selecting or changing the startup device sequence" on page 43.
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