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
the
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
49
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.
a.
If
there
is
a
smudge
on
the
lens,
gently
clean
the
area
with
a
plain
cotton-tipped
swab.
b.
If
there
is
debris
in
the
lens,
gently
blow
the
debris
away
from
the
area.
4.
Check
the
surface
on
which
you
are
using
the
mouse.
If
you
have
a
very
intricate
picture
or
pattern
beneath
the
mouse
it
may
be
difficult
for
the
digital
signal
processor
(DSP)
to
determine
changes
in
the
mouse
position.
5.
Reconnect
the
mouse
cable
to
the
computer.
6.
Turn
your
computer
back
on.
58
User
Guide
Summary of Contents for 7522D6U
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Page 68: ...11 Reconnect the mouse cable to the computer 12 Turn your computer back on 60 User Guide ...
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Page 80: ...Part Number 53Y6289 Printed in USA 1P P N 53Y6289 ...
