Lenovo ThinkCentre A35 (English) User guide for ThinkCentre A35 (type 8139) sy - Page 48

Recovering, POST/BIOS, update, failure

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3. Print these instructions. This is very important since they are not on the screen after the download begins. 4. From your browser, Click Back to return to the list of files. Carefully follow the printed instructions to download, extract, and install the update. Recovering from a POST/BIOS update failure If power to your computer is interrupted while POST/BIOS is being updated (flash update), your computer might not restart correctly. If this happens, perform the following procedure (also known as a Boot-block Recovery): 1. Turn off the computer and any attached devices, such as printers, monitors, and external drives. 2. Unplug all power cords from electrical outlets, and remove the cover. See "Removing the cover" on page 11. 3. Locate the Clear CMOS/Recovery jumper on the system board. See "Identifying parts on the system board" on page 12. 4. Move the jumper from the standard position (pins 1 and 2) to pins 2 and 3. Note: If only two pins exist on the system board, place the jumper across the two pins. 5. Replace the cover and reconnect all power cords. See "Replacing the cover and connecting the cables" on page 25. 6. Insert the POST/BIOS update (flash) diskette into diskette drive A, and turn on the computer. 7. The update session will take 2-3 minutes. During this time you will hear a series of beeps. After the update session is completed, there will be no video, the series of beeps will end, and the system will automatically turn off. Remove the diskette from the diskette drive. 8. Repeat steps 2 through 3 on page 32. 9. Move the Clear CMOS/Recovery jumper to its original position. 10. Replace the cover and reconnect all power cords and cables that were disconnected. 11. Turn on the computer to restart the operating system. 32 User Guide

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3.
Print
these
instructions.
This
is
very
important
since
they
are
not
on
the
screen
after
the
download
begins.
4.
From
your
browser,
Click
Back
to
return
to
the
list
of
files.
Carefully
follow
the
printed
instructions
to
download,
extract,
and
install
the
update.
Recovering
from
a
POST/BIOS
update
failure
If
power
to
your
computer
is
interrupted
while
POST/BIOS
is
being
updated
(flash
update),
your
computer
might
not
restart
correctly.
If
this
happens,
perform
the
following
procedure
(also
known
as
a
Boot-block
Recovery):
1.
Turn
off
the
computer
and
any
attached
devices,
such
as
printers,
monitors,
and
external
drives.
2.
Unplug
all
power
cords
from
electrical
outlets,
and
remove
the
cover.
See
“Removing
the
cover”
on
page
11.
3.
Locate
the
Clear
CMOS/Recovery
jumper
on
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
12.
4.
Move
the
jumper
from
the
standard
position
(pins
1
and
2)
to
pins
2
and
3.
Note:
If
only
two
pins
exist
on
the
system
board,
place
the
jumper
across
the
two
pins.
5.
Replace
the
cover
and
reconnect
all
power
cords.
See
“Replacing
the
cover
and
connecting
the
cables”
on
page
25.
6.
Insert
the
POST/BIOS
update
(flash)
diskette
into
diskette
drive
A,
and
turn
on
the
computer.
7.
The
update
session
will
take
2-3
minutes.
During
this
time
you
will
hear
a
series
of
beeps.
After
the
update
session
is
completed,
there
will
be
no
video,
the
series
of
beeps
will
end,
and
the
system
will
automatically
turn
off.
Remove
the
diskette
from
the
diskette
drive.
8.
Repeat
steps
2
through
3
on
page
32.
9.
Move
the
Clear
CMOS/Recovery
jumper
to
its
original
position.
10.
Replace
the
cover
and
reconnect
all
power
cords
and
cables
that
were
disconnected.
11.
Turn
on
the
computer
to
restart
the
operating
system.
32
User
Guide