Lenovo ThinkCentre M50 User Manual - Page 86

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To erase a forgotten password: 1. Turn off the computer and all attached devices. 2. Remove the cover. See "Removing the cover" on page 56. 3. Locate the Clear CMOS/Recovery jumper on the system board. See "Identifying parts on the system board" on page 57. 4. If necessary, see "Installing adapters" on page 60 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). 6. Replace the cover and connect the power cord. See "Replacing the cover and connecting the cables." 7. Restart the computer, leave it on for approximately 10 seconds. Turn off the computer by holding the power switch for approximately 5 seconds. The computer will turn off. 8. Repeat steps 2 through 4 on page 70. 9. Move the jumper back to the standard (pins 1 and 2). 10. Replace the cover and connect the power cord. See "Replacing the cover and connecting the cables." Replacing the cover and connecting the cables After working with options, you need to install any removed parts, replace the cover, and reconnect any cables, including telephone lines and power cords. Also, depending on the option that is installed, you might need to confirm the updated information in the IBM Setup Utility program. To replace the cover and connect cables to your computer: 1. Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside your computer. 2. Clear any cables that might impede the replacement of the cover. 70 User Guide

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To
erase
a
forgotten
password:
1.
Turn
off
the
computer
and
all
attached
devices.
2.
Remove
the
cover.
See
“Removing
the
cover”
on
page
56.
3.
Locate
the
Clear
CMOS/Recovery
jumper
on
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
57.
4.
If
necessary,
see
“Installing
adapters”
on
page
60
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).
6.
Replace
the
cover
and
connect
the
power
cord.
See
“Replacing
the
cover
and
connecting
the
cables.”
7.
Restart
the
computer,
leave
it
on
for
approximately
10
seconds.
Turn
off
the
computer
by
holding
the
power
switch
for
approximately
5
seconds.
The
computer
will
turn
off.
8.
Repeat
steps
2
through
4
on
page
70.
9.
Move
the
jumper
back
to
the
standard
(pins
1
and
2).
10.
Replace
the
cover
and
connect
the
power
cord.
See
“Replacing
the
cover
and
connecting
the
cables.”
Replacing
the
cover
and
connecting
the
cables
After
working
with
options,
you
need
to
install
any
removed
parts,
replace
the
cover,
and
reconnect
any
cables,
including
telephone
lines
and
power
cords.
Also,
depending
on
the
option
that
is
installed,
you
might
need
to
confirm
the
updated
information
in
the
IBM
Setup
Utility
program.
To
replace
the
cover
and
connect
cables
to
your
computer:
1.
Ensure
that
all
components
have
been
reassembled
correctly
and
that
no
tools
or
loose
screws
are
left
inside
your
computer.
2.
Clear
any
cables
that
might
impede
the
replacement
of
the
cover.
70
User
Guide