Lenovo Portable Computer User Guide
66
hands
of
safety
investigators).
z
When
going
abroad,
get
to
know
the
power
cord
standard
in
the
target
country
before
you
go.
4.1.6
Do
not
change
the
factory
hardware
specification
without
authoriation
z
Do
not
change
the
computer’s
factory
hardware,
including
removing
original
hardware
or
adding
new
hardware,
without
authoriation
from
Lenovo
licensed
agencies.
z
Lenovo
has
no
warranty
on
the
usability
or
reliability
of
any
devices
or
software
that
are
not
provided
by
Lenovo
or
its
affiliates.
4.2
Troubleshooting
4.2.1
The
computer
does
nothing
when
you
turn
it
on.
Do
as
follows:
z
See
if
the
AC
adapter
and
its
power
cord
are
well
connected
to
the
computer
and
power
outlet.
z
Check
the
battery’s
power
status
(some
battery
has
a
power
self
‐
checking
button).
See
if
the
battery
interface
is
defiled
or
if
the
power
cord
plug
is
defiled.
z
Use
the
battery
and
AC
power
to
power
the
computer
respectively.
Turn
the
computer
on
to
see
if
the
power
indicator
