Lenovo ThinkCentre M55 User Manual - Page 66

Password, Administrator, Setting, changing, deleting, password, Selecting, startup, device,

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v Setup Utility program and hard disk drive passwords are not case sensitive v Not be your name or your user name v Not be a common word or a common name v Be significantly different from your previous password User Password When a User Password is set, the user is prompted to type a valid password each time the computer is turned on. The computer cannot be used until a valid password is typed from the keyboard. Administrator Password Setting an Administrator Password deters unauthorized persons from changing configuration settings. If you are responsible for maintaining the settings of several computers, you might want to set an Administrator Password. After you set an Administrator Password, a password prompt is displayed each time you try to access the Setup Utility program. If both the user and administrator passwords are set, you can type either password. However, to change any configuration settings, you must use your administrator password. Setting, changing, and deleting a password To set, change, or delete a password, do the following: Note: A password can be any combination of up to twelve characters (A- Z, a-z, and 0-9). See "Password considerations" on page 49 for more information. 1. Start the Setup Utility program (see Chapter 5, "Using the Setup Utility," on page 49). 2. From the Setup Utility program menu, select Security. 3. Select Set Passwords. Read the information displayed on the right side of the screen. Selecting a startup device If your computer does not start up (boot) from a device such as the CD-ROM, diskette, or hard disk as expected, use one of the following procedures to select a startup device. Selecting a temporary startup device Use this procedure to startup from any boot device. Note: Not all CDs, hard disks, and diskettes are startable (bootable). 1. Turn off your computer. 2. Press and hold the F12 key then turn on the computer. When the Startup Device Menu appears, release the F12 key. 50 User Guide Note: If you are using a USB keyboard and the Startup Device Menu does not display using this method, repeatedly press and release the F12 key rather than leaving it pressed when turning on the computer. 3. Select the desired startup device from the Startup Device Menu and press Enter to begin.

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v
Setup
Utility
program
and
hard
disk
drive
passwords
are
not
case
sensitive
v
Not
be
your
name
or
your
user
name
v
Not
be
a
common
word
or
a
common
name
v
Be
significantly
different
from
your
previous
password
User
Password
When
a
User
Password
is
set,
the
user
is
prompted
to
type
a
valid
password
each
time
the
computer
is
turned
on.
The
computer
cannot
be
used
until
a
valid
password
is
typed
from
the
keyboard.
Administrator
Password
Setting
an
Administrator
Password
deters
unauthorized
persons
from
changing
configuration
settings.
If
you
are
responsible
for
maintaining
the
settings
of
several
computers,
you
might
want
to
set
an
Administrator
Password.
After
you
set
an
Administrator
Password,
a
password
prompt
is
displayed
each
time
you
try
to
access
the
Setup
Utility
program.
If
both
the
user
and
administrator
passwords
are
set,
you
can
type
either
password.
However,
to
change
any
configuration
settings,
you
must
use
your
administrator
password.
Setting,
changing,
and
deleting
a
password
To
set,
change,
or
delete
a
password,
do
the
following:
Note:
A
password
can
be
any
combination
of
up
to
twelve
characters
(A-
Z,
a-z,
and
0-9).
See
“Password
considerations”
on
page
49
for
more
information.
1.
Start
the
Setup
Utility
program
(see
Chapter
5,
“Using
the
Setup
Utility,”
on
page
49).
2.
From
the
Setup
Utility
program
menu,
select
Security
.
3.
Select
Set
Passwords
.
Read
the
information
displayed
on
the
right
side
of
the
screen.
Selecting
a
startup
device
If
your
computer
does
not
start
up
(boot)
from
a
device
such
as
the
CD-ROM,
diskette,
or
hard
disk
as
expected,
use
one
of
the
following
procedures
to
select
a
startup
device.
Selecting
a
temporary
startup
device
Use
this
procedure
to
startup
from
any
boot
device.
Note:
Not
all
CDs,
hard
disks,
and
diskettes
are
startable
(bootable).
1.
Turn
off
your
computer.
2.
Press
and
hold
the
F12
key
then
turn
on
the
computer.
When
the
Startup
Device
Menu
appears,
release
the
F12
key.
Note:
If
you
are
using
a
USB
keyboard
and
the
Startup
Device
Menu
does
not
display
using
this
method,
repeatedly
press
and
release
the
F12
key
rather
than
leaving
it
pressed
when
turning
on
the
computer.
3.
Select
the
desired
startup
device
from
the
Startup
Device
Menu
and
press
Enter
to
begin.
50
User
Guide