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
Hardware controlled passwords are set using the Setup Utility program. For more information about passwords, see “Using passwords” on page 55.
Operating system password
An operating system password is very similar to a
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 “Flash update procedures” on page 111.
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.
–Select Standard CMOS Features.
•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 “Flash update procedures” on page 111.
Note: BIOS settings vary by operating system. Change the BIOS settings before installing a new operating system. See “Changing the BIOS settings before installing a new operating system” on page 58.
Flash update procedures
This section details how to flash (update) the BIOS.
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