Lenovo ThinkCentre A52 (English) Quick reference guide - Page 42

Symptom, Action

Get Lenovo ThinkCentre A52 PDF manuals and user guides View all Lenovo ThinkCentre A52 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 42 highlights

Symptom The keyboard does not work. The computer does not respond to the keyboard. Action 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. The mouse does not work. The computer does not respond to the mouse. Note: This applies to a mechanical mouse only. If you cannot correct the problem, have the computer serviced. 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. The operating system will not start. If you cannot correct the problem, have the computer serviced. 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 "Starting the Setup Utility" on page 9. Verify the startup sequence in the Setup Utility program. If you cannot correct the problem, have the computer serviced. An error code is displayed before the operating system starts. Write down the code number, and see "Error codes" on page 27. The computer beeps Verify that no keys are stuck down. multiple times before the operating system starts. If you cannot correct the problem, have the computer serviced. 24 Quick Reference

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
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
“Starting
the
Setup
Utility”
on
page
9.
Verify
the
startup
sequence
in
the
Setup
Utility
program.
If
you
cannot
correct
the
problem,
have
the
computer
serviced.
An
error
code
is
displayed
before
the
operating
system
starts.
Write
down
the
code
number,
and
see
“Error
codes”
on
page
27.
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