5.
The
diagnostic
program
opens
automatically.
Select
the
diagnostic
test
you
want
to
run.
Press
the
F1
key
for
additional
help.
6.
Follow
the
instructions
on
the
screen.
Note:
Rescue
media
includes
PC-Doctor
for
Windows
PE.
For
more
information
about
rescue
media,
see
“Creating
and
using
rescue
media”
on
page
38.
PC-Doctor
for
DOS
You
can
also
download
the
latest
version
of
the
PC-Doctor
for
DOS
diagnostic
program
from:
http://www.lenovo.com/support
The
PC-Doctor
for
DOS
diagnostic
program
runs
independently
of
the
Windows
operating
system.
Use
PC-Doctor
for
DOS,
if
you
are
unable
to
start
the
Windows
operating
system
or
if
Lenovo
System
Toolbox
and
PC-Doctor
for
Windows
PE
have
not
been
successful
in
isolating
a
possible
problem.
You
can
run
PC-Doctor
for
DOS
from
a
diagnostic
CD/DVD
image
that
you
create.
Creating
a
diagnostic
CD/DVD
image
To
create
a
diagnostic
CD/DVD
image,
download
a
self-starting
bootable
CD/DVD
image
(known
as
an
ISO
image)
of
the
diagnostic
program
from
http://www.lenovo.com/support
After
you
download
the
image,
you
can
create
the
CD/DVD
using
any
CD/DVD
burning
software.
Running
diagnostics
from
the
disc
To
run
diagnostics
from
the
diagnostic
CD/DVD
image
that
you
created,
do
the
following:
1.
Make
sure
the
computer
is
turned
off.
2.
Insert
the
disc
into
the
optical
drive.
3.
Restart
the
computer.
Note:
If
the
diagnostic
program
does
not
start,
you
might
not
have
your
optical
drive
set
as
a
startable
device.
See
“Selecting
a
startup
device”
on
page
45
for
instructions
on
how
to
change
the
startup
device.
4.
When
the
diagnostics
program
opens,
follow
the
instructions
on
the
screen.
5.
When
the
program
finishes,
be
sure
to
remove
the
disc
from
the
drive.
6.
Select
the
diagnostic
test
you
want
to
run.
Press
the
F1
key
for
additional
help.
Cleaning
the
mouse
This
section
provides
instructions
on
how
to
clean
an
optical
or
non-optical
mouse.
Optical
mouse
An
optical
mouse
uses
a
light-emitting
diode
(LED)
and
an
optical
sensor
to
navigate
the
pointer.
If
the
pointer
on
the
screen
does
not
move
smoothly
with
the
optical
mouse,
you
might
need
to
clean
the
mouse.
To
clean
the
optical
mouse:
1.
Turn
off
your
computer.
2.
Disconnect
the
mouse
cable
from
the
computer.
3.
Turn
the
mouse
upside
down
to
look
at
the
lens.
54
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Guide
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