Lenovo TC A51-8122 Manuel D’Utilisation
Chapter
5.
Troubleshooting
and
diagnostics
This
chapter
describes
some
basic
troubleshooting
and
diagnostic
tools.
If
your
computer
problem
is
not
described
here,
use
Access
IBM
for
more
detailed
troubleshooting
information
or
see
Basic
troubleshooting
Symptom
Action
The
computer
does
not
start
when
you
press
the
power
button.
Verify
that:
v
The
power
cord
is
plugged
into
the
rear
of
the
computer
and
into
a
working
electrical
outlet.
v
If
your
computer
has
a
secondary
power
switch
on
the
back
of
the
computer,
ensure
that
it
is
switched
on.
Check
the
power
indicator
on
the
front
of
the
computer
to
ensure
that
the
power
is
on.
v
The
power
supply
and
system
board
are
working.
See
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
The
monitor
screen
is
blank.
Verify
that:
v
The
monitor
cable
is
securely
attached
to
the
rear
of
the
monitor
and
to
the
rear
of
the
computer.
v
The
monitor
power
cord
is
plugged
into
the
monitor
and
into
a
working
electrical
outlet.
v
The
monitor
is
turned
on,
and
the
brightness
and
contrast
controls
are
set
correctly.
v
The
monitor
signal
cable
is
securely
connected
to
the
monitor
and
to
the
monitor
connector
on
the
computer.
v
The
power
supply
and
system
board
are
working.
See
Note:
If
your
computer
has
two
monitor
connectors,
verify
that
your
monitor
is
connected
to
the
one
in
the
PCI-express
(PCI-e)
option
connector
rather
than
the
one
in
the
rear
of
the
system
board.
See
Step
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
©
Copyright
Lenovo
2005.
©
Portions
Copyright
IBM
Corp.
2005.
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