Lenovo THINKCENTRE 6396 Bedienungsanleitung PDF herunterladen (Seite 157)

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:

v Passwords

v Vital Product Data

v Management Information Format (MIF)

Hardware controlled Passwords

Hardware controlled passwords are set using the Setup Utility program. For more

information about passwords, see “Using passwords” on page 49.

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 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

CD-ROM or diskette” on page 152.

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.

v To determine the current Level of BIOS:

– Start the Setup Utility.

– Select System Information 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

update (flash) the BIOS, see “Updating (flashing) BIOS from a CD-ROM or

diskette” on page 152.

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Lenovo THINKCENTRE 6396 Bedienungsanleitung Seite 157