Lenovo ThinkCentre A58e Hardware Maintenance Manual - Page 105
Additional service information, Security features, Hardware controlled passwords
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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. © Copyright Lenovo 2009, 2010 99