Lenovo ThinkCentre M51e (English) User guide - Page 39

Erasing, forgotten, password, clearing

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Refer to "Lithium battery notice" on page x for information about replacing and disposing of the battery. To change the battery: 1. Turn off the computer and all attached devices. 2. Remove the computer cover. See "Removing the cover" on page 10. 3. Locate the battery. See "Identifying parts on the system board" on page 11. 4. If necessary, remove any adapters that impede access to the battery. See "Installing adapters" on page 13 for more information. 5. Remove the old battery. 6. Install the new battery. 7. Replace any adapters that were removed to gain access to the battery. See "Installing adapters" on page 13 for instructions for replacing adapters. 8. Replace the computer cover, and plug in the power cord. See "Replacing the cover and connecting the cables" on page 24. Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. This is normal after replacing the battery. 9. Turn on the computer and all attached devices. 10. Use the Setup Utility program to set the date and time and any passwords. See Chapter 2, "Using the Setup Utility program," on page 25. Erasing a lost or forgotten password (clearing CMOS) This section applies to lost or forgotten passwords. For more information about lost or forgotten passwords, see the Access IBM program on your desktop. To erase a forgotten password: 1. Turn off the computer and all attached devices. 2. Remove the computer cover. See "Removing the cover" on page 10. 3. Locate the Clear CMOS/Recovery jumper on the system board. See "Identifying parts on the system board" on page 11. 4. If necessary, see "Installing adapters" on page 13 to remove any adapters that impede access to the Clear CMOS/Recovery jumper. 5. Move the jumper from the standard position (pins 1 and 2) to the maintenance or configure position (pins 2 and 3). Chapter 1. Installing options 23

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Refer
to
“Lithium
battery
notice”
on
page
x
for
information
about
replacing
and
disposing
of
the
battery.
To
change
the
battery:
1.
Turn
off
the
computer
and
all
attached
devices.
2.
Remove
the
computer
cover.
See
“Removing
the
cover”
on
page
10.
3.
Locate
the
battery.
See
“Identifying
parts
on
the
system
board”
on
page
11.
4.
If
necessary,
remove
any
adapters
that
impede
access
to
the
battery.
See
“Installing
adapters”
on
page
13
for
more
information.
5.
Remove
the
old
battery.
6.
Install
the
new
battery.
7.
Replace
any
adapters
that
were
removed
to
gain
access
to
the
battery.
See
“Installing
adapters”
on
page
13
for
instructions
for
replacing
adapters.
8.
Replace
the
computer
cover,
and
plug
in
the
power
cord.
See
“Replacing
the
cover
and
connecting
the
cables”
on
page
24.
Note:
When
the
computer
is
turned
on
for
the
first
time
after
battery
replacement,
an
error
message
might
be
displayed.
This
is
normal
after
replacing
the
battery.
9.
Turn
on
the
computer
and
all
attached
devices.
10.
Use
the
Setup
Utility
program
to
set
the
date
and
time
and
any
passwords.
See
Chapter
2,
“Using
the
Setup
Utility
program,”
on
page
25.
Erasing
a
lost
or
forgotten
password
(clearing
CMOS)
This
section
applies
to
lost
or
forgotten
passwords.
For
more
information
about
lost
or
forgotten
passwords,
see
the
Access
IBM
program
on
your
desktop.
To
erase
a
forgotten
password:
1.
Turn
off
the
computer
and
all
attached
devices.
2.
Remove
the
computer
cover.
See
“Removing
the
cover”
on
page
10.
3.
Locate
the
Clear
CMOS/Recovery
jumper
on
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
11.
4.
If
necessary,
see
“Installing
adapters”
on
page
13
to
remove
any
adapters
that
impede
access
to
the
Clear
CMOS/Recovery
jumper.
5.
Move
the
jumper
from
the
standard
position
(pins
1
and
2)
to
the
maintenance
or
configure
position
(pins
2
and
3).
Chapter
1.
Installing
options
23