Lenovo 3000 J User Manual
Page 42
Symptom
Action
The
keyboard
does
not
work.
The
computer
does
not
respond
to
the
keyboard.
Verify
that:
v
The
computer
and
monitor
are
turned
on
and
the
brightness
and
contrast
controls
are
set
correctly.
v
The
keyboard
is
securely
connected
to
the
keyboard
connector
on
the
computer.
v
No
keys
are
stuck.
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
The
Enhanced
Performance
USB
Keyboard
does
not
work
Verify
that:
v
The
computer
is
turned
on.
v
The
keyboard
is
securely
connected
to
a
USB
connector
on
the
front
or
rear
of
the
computer.
v
No
keys
are
stuck.
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
The
mouse
does
not
work.
The
computer
does
not
respond
to
the
mouse.
Note:
This
applies
to
a
mechanical
mouse
only.
Clean
the
mouse.
Verify
that:
v
The
computer
and
monitor
are
turned
on
and
the
brightness
and
contrast
controls
are
set
correctly.
v
The
mouse
is
securely
connected
to
the
mouse
connector
on
the
computer.
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
The
operating
system
will
not
start.
Verify
that:
v
There
is
no
diskette
in
the
diskette
drive.
v
The
startup
sequence
includes
the
device
where
the
operating
system
resides.
Usually,
the
operating
system
is
on
the
hard
disk.
Start
the
Setup
Utility
program.
See
Verify
the
startup
sequence
in
the
Setup
Utility
program.
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
The
computer
beeps
multiple
times
before
the
operating
system
starts.
Verify
that
no
keys
are
stuck
down.
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
24
Quick
Reference