IBM ThinkCentre 8143 - Padlock; Password Protection; Changing the Battery

Padlock
Your computer is equipped with a padlock loop such that the cover cannot be
removed when a padlock is installed.
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Password protection
To deter unauthorized use of your computer, you can use the IBM Setup Utility
program to set passwords. See “Using passwords” on page 27.
What to do next
v To work with another option, go to the appropriate section.
v To complete the installation, go to “Replacing the cover and connecting the
cables” on page 25.
Changing the battery
Your computer has a special type of memory that maintains the date, time, and
settings for built-in features, such as parallel-port assignments (configuration). A
battery keeps this information active when you turn off the computer.
The battery normally requires no charging or maintenance throughout its life;
however, no battery lasts forever. If the battery fails, the date, time, and
configuration information (including passwords) are lost. An error message is
displayed when you turn on the computer.
Chapter 1. Installing options 23