Lenovo T40 Manual De Usuario
v
The
ac
adapter
is
connected
to
the
computer
and
the
power
cord
is
plugged
into
a
working
electrical
outlet.
v
The
computer
power
is
on.
(Turn
on
the
power
switch
again
for
confirmation.)
If
these
items
are
properly
set,
and
the
screen
remains
blank,
have
the
computer
serviced.
Problem:
When
I
turn
on
the
machine,
nothing
appears
on
the
screen,
but
I
hear
two
or
more
beeps.
Solution:
Make
sure
that
the
memory
card
is
installed
correctly.
If
it
is,
but
the
screen
is
still
blank,
and
you
hear
five
beeps,
have
the
computer
serviced.
If
you
hear
4
cycles
of
4
beeps
each,
the
Security
Chip
has
a
problem.
Have
the
computer
serviced.
Problem:
When
I
turn
on
the
machine,
only
a
white
pointer
appears
on
a
blank
screen.
Solution:
Reinstall
your
operating
system,
and
turn
on
the
computer.
If
you
still
see
only
the
pointer
on
the
screen,
have
the
computer
serviced.
Problem:
My
screen
goes
blank
while
the
computer
is
on.
Solution
Your
screen
saver
or
power
management
may
be
enabled.
Touch
the
TrackPoint
or
the
touch
pad,
or
press
a
key
to
exit
the
screen
saver,
or
press
the
power
switch
to
resume
from
standby
or
hibernation
mode.
Problem:
The
DOS
full-screen
looks
smaller.
Solution:
If
you
use
a
DOS
application
that
supports
only
640×480
resolution
(VGA
mode),
the
screen
image
might
look
slightly
distorted
or
appear
smaller
than
the
display
size.
This
is
to
maintain
compatibility
with
other
DOS
applications.
To
expand
the
screen
image
to
the
same
size
as
the
actual
screen,
start
the
ThinkPad
Configuration
Program
and
click
LCD
;
then
select
the
Screen
expansion
function.
(The
image
might
still
look
slightly
distorted.)
Note:
If
your
computer
has
a
screen
expansion
function,
you
can
use
the
Fn+F8
keys
to
expand
the
screen
image.
(This
function
is
not
supported
in
Windows
XP
or
Windows
2000.)
Solving
computer
problems
18
ThinkPad
®
T40
Series
Service
and
Troubleshooting
Guide