Lenovo 81713GU User Manual - Page 44

Recovering, POST/BIOS, update, failure

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6. Scroll down and look for a .txt file that has instructions for Flash BIOS update from the operating system. Click the .txt file. 7. Print these instructions. This is very important since they are not on the screen after the download begins. 8. 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 commonly called 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 open the cover. See "Opening the cover" on page 12. 3. Locate the Clear CMOS/BIOS Recovery jumper on the system board. See "Identifying parts on the system board" on page 15. 4. If necessary, refer to "Accessing system board components and drives" on page 14 to gain access to the Clear CMOS/BIOS Recovery jumper. 5. Remove any cables or adapters that impede access to the Clear CMOS/BIOS Recovery jumper. 6. Move the jumper from the standard position (pins 1 and 2) to pins 2 and 3. 7. Replace any cables or adapters that were removed. 8. Close the cover. See "Closing the cover and connecting the cables" on page 24. 9. Reconnect the power cords for the computer and monitor to electrical outlets. 10. Insert the POST/BIOS update (flash) diskette into drive A, and turn on the computer and the monitor. 11. During the update session there will be no video. You will hear a long beep when recovery is completed. Remove the diskette from the diskette drive, and turn off the computer and monitor. 12. Unplug the power cords from electrical outlets. 13. Open the cover. See "Opening the cover" on page 12. 14. Remove any cables or adapters that impede access to the Clear CMOS/BIOS Recovery jumper. 15. Replace the Clear CMOS/BIOS Recovery jumper to its original position. 16. Replace any cables or adapters that were removed. 17. Close the cover and reconnect any cables that were disconnected. 18. Turn on the computer to restart the operating system. 30 User Guide

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6.
Scroll
down
and
look
for
a
.txt
file
that
has
instructions
for
Flash
BIOS
update
from
the
operating
system.
Click
the
.txt
file.
7.
Print
these
instructions.
This
is
very
important
since
they
are
not
on
the
screen
after
the
download
begins.
8.
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
commonly
called
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
open
the
cover.
See
“Opening
the
cover”
on
page
12.
3.
Locate
the
Clear
CMOS/BIOS
Recovery
jumper
on
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
15.
4.
If
necessary,
refer
to
“Accessing
system
board
components
and
drives”
on
page
14
to
gain
access
to
the
Clear
CMOS/BIOS
Recovery
jumper.
5.
Remove
any
cables
or
adapters
that
impede
access
to
the
Clear
CMOS/BIOS
Recovery
jumper.
6.
Move
the
jumper
from
the
standard
position
(pins
1
and
2)
to
pins
2
and
3.
7.
Replace
any
cables
or
adapters
that
were
removed.
8.
Close
the
cover.
See
“Closing
the
cover
and
connecting
the
cables”
on
page
24.
9.
Reconnect
the
power
cords
for
the
computer
and
monitor
to
electrical
outlets.
10.
Insert
the
POST/BIOS
update
(flash)
diskette
into
drive
A,
and
turn
on
the
computer
and
the
monitor.
11.
During
the
update
session
there
will
be
no
video.
You
will
hear
a
long
beep
when
recovery
is
completed.
Remove
the
diskette
from
the
diskette
drive,
and
turn
off
the
computer
and
monitor.
12.
Unplug
the
power
cords
from
electrical
outlets.
13.
Open
the
cover.
See
“Opening
the
cover”
on
page
12.
14.
Remove
any
cables
or
adapters
that
impede
access
to
the
Clear
CMOS/BIOS
Recovery
jumper.
15.
Replace
the
Clear
CMOS/BIOS
Recovery
jumper
to
its
original
position.
16.
Replace
any
cables
or
adapters
that
were
removed.
17.
Close
the
cover
and
reconnect
any
cables
that
were
disconnected.
18.
Turn
on
the
computer
to
restart
the
operating
system.
30
User
Guide