Lenovo ThinkCentre M55 (English) User guide - Page 44

Password, protection, Changing, battery

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Password protection To deter unauthorized use of your computer, you can use the Setup Utility program to set a password. When you turn on your computer you are prompted to type the password to unlock the keyboard for normal use. For more information, see Chapter 5, "Using the Setup Utility," on page 41. What to do next: v To work with another option, go to the appropriate section. v To complete the installation, go to "Closing the cover and connecting the cables" on page 31. 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. Refer to "Lithium battery notice" on page x for information about replacing and disposing of the battery. 28 User Guide To change the battery: 1. Open the computer cover. See "Opening the cover" on page 19. 2. Pivot the drive bay assembly upward to gain access to the system board.

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Password
protection
To
deter
unauthorized
use
of
your
computer,
you
can
use
the
Setup
Utility
program
to
set
a
password.
When
you
turn
on
your
computer
you
are
prompted
to
type
the
password
to
unlock
the
keyboard
for
normal
use.
For
more
information,
see
Chapter
5,
“Using
the
Setup
Utility,”
on
page
41.
What
to
do
next:
v
To
work
with
another
option,
go
to
the
appropriate
section.
v
To
complete
the
installation,
go
to
“Closing
the
cover
and
connecting
the
cables”
on
page
31.
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.
Refer
to
“Lithium
battery
notice”
on
page
x
for
information
about
replacing
and
disposing
of
the
battery.
To
change
the
battery:
1.
Open
the
computer
cover.
See
“Opening
the
cover”
on
page
19.
2.
Pivot
the
drive
bay
assembly
upward
to
gain
access
to
the
system
board.
28
User
Guide