Lenovo G51 User manual

G40/G50/Z40/Z50/
G41/G51
User GuideUser Guide
Read the safety notices and important tips in the
included manuals before using your computer.

First Edition (February 2015)
© Copyright Lenovo 2015.
Before using the product, be sure to read Lenovo Safety and General
Information Guide first.
The features described in this guide are common to most models.
Some features may not be available on your computer or your
computer may include features that are not described in this user
guide.
Some instructions in this guide may assume that you are using
Windows®8.1. If you are using other Windows operating system,
some operations may be slightly different. If you are using other
operating systems, some operations may not apply to you.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General
Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set
forth in Contract No. GS-35F-05925.
Notes
•
•
•
The illustrations in this manual may differ from the actual product.
Please refer to the actual product.
The illustrations used in this manual are for Lenovo Z50-70 unless
otherwise stated.
•
•
For details, refer to Guides & Manuals at http://support.lenovo.com.
Regulatory Notice
•

Instructions and technical information in this manual are applicable to the following
Lenovo notebook computers unless otherwise stated.
Model name MT
Lenovo G40-30
Lenovo G40-45
Lenovo G40-70
Lenovo G40-70m
Lenovo G40-80
Lenovo G50-30
Lenovo G50-45
Lenovo G50-70
Lenovo G50-70m
Lenovo G50-80
Lenovo G50-80 Touch
Lenovo Z40-70
Lenovo Z40-75
Lenovo Z50-70
Lenovo Z50-75
Lenovo G41-35
Lenovo G51-35
20417, 80FY
20374, 80E1, 80MN
20369, 80DX
20422, 80G3
80KY, 80E4
20418, 80G0
20375, 80E3, 80MQ
20351, 80DY
20423, 80G4
80L0, 80E5
80KR, 80L4
20366, 80E6
20360, 80DW
20354, 80E7
20356, 80EC
80M7
80M8
Lenovo
User GuideUser Guide
G40/G50/Z40/Z50/G41/G51G40/G50/Z40/Z50/G41/G51

i
Chapter 1. Getting to know your computer ..........................................1
Top view.......................................................................................................................1
Left-side view ..............................................................................................................9
Right-side view..........................................................................................................12
Frontview ..................................................................................................................14
Bottom view...............................................................................................................15
Chapter 2. Starting to use Windows 8.1..............................................16
Configuringthe operatingsystem for the firsttime ............................................16
Operatingsystem interfaces ....................................................................................16
The charms.................................................................................................................17
Puttingthe computer to sleep or shuttingit down..............................................19
Touch screen operation (G50-80 Touch)................................................................20
Connectingto a wireless network ..........................................................................24
Help and support......................................................................................................25
Chapter 3. Lenovo OneKey Recovery System ...................................26
Chapter 4. Troubleshooting .................................................................28
Frequently asked questions.....................................................................................28
Troubleshooting........................................................................................................30
Appendix A. CRU instructions.............................................................34
Replacingthe battery pack ......................................................................................34
Replacingthe hard disk drive .................................................................................35
Replacingmemory....................................................................................................41
Replacingthe thermal fan (Lenovo G50-30/G50-45/G50-70/G50-70m/
G50-80/G50-80 Touch/Z50-70/Z50-75/G51-35) .................................................44
Replacingthe keyboard............................................................................................46
Removingthe optical drive .....................................................................................51
Trademarks............................................................................................54
Contents

1
Chapter 1. Getting to know your computer
Top view ---------------------------------------------------------------------------------------------------
Lenovo G40-30/G40-45/G40-70/G40-70m/G40-80/Z40-70/
Z40-75/G41-35
12 2
4
5
6
3

2
Chapter 1. Getting to know your computer
Lenovo G50-30/G50-45/G50-70/G50-70m/G50-80/G50-80 Touch/
Z50-70/Z50-75/G51-35
Note: The dashed areas indicate parts that are not visible externally.
Attention:
•Do not open the display panel beyond 130 degrees. When closing the display panel, be
careful not to leave pens or any other objects in between the display panel and the
keyboard. Otherwise, the display panel may be damaged.
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4
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Chapter 1. Getting to know your computer
3
Integrated
camera
Use the camera for video communication or taking
photos.
Built-in
microphone
Captures sound which can be used for video conferencing,
voice narration, or audio recording.
Note: Select models may have only one microphone, please refer to the actual product.
Wireless LAN
antennas
Connect to a wireless LAN adapter to send and receive
wireless radio signals.
Computer display Provides brilliant visual output.
Power button Press this button to turn on the computer.
Touchpad The touchpad functions as a conventional mouse.
Touchpad: To move the pointer on the screen, slide your
fingertip over the pad in the direction in which you want
the pointer to move.
Touchpad buttons: The functions of the left/right side
correspond to that of the left/right mouse button on a
conventional mouse.
Note: You can enable/disable the touchpad by pressing .
a
b
c
d
e
f

4
Chapter 1. Getting to know your computer
Using the keyboard
Numeric keypad
(Lenovo G50-30/G50-45/G50-70/G50-70m/G50-80/G50-80 Touch/
Z50-70/Z50-75/G51-35)
The keyboard has a separate numeric keypad. To enable or disable the
numeric keypad, press the Num Lock key.
Function key combinations
Through the use of the function keys, you can change operational features
instantly. To use this function, press and hold Fn ; then press one of the
function keys .
Lenovo G40-30/G40-45/G40-70/G40-70m/G40-80/Z40-70/Z40-75/G41-35
The following describes the features of each function key.
Fn + Home: Activates the pause function.
Fn + End: Activates the break function.
Fn + PgUp: Enables/disables the scroll lock.
Fn + PgDn: Activates the insert function.
a
b
1
2

Chapter 1. Getting to know your computer
5
Lenovo G50-30/G50-45/G50-70/G50-70m/G50-80/G50-80 Touch/
Z50-70/Z50-75/G51-35
The following describes the features of each function key.
Fn + Home: Activates the pause function.
Fn + End: Activates the break function.
Fn + PgUp: Enables/disables the scroll lock.
Fn + PgDn: Activates the system request.
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2

6
Chapter 1. Getting to know your computer
Hotkeys
You can access certain system settings quickly by pressing the appropriate
hotkeys.
Lenovo G40-30/G40-45/G40-70/G40-70m/G40-80/Z40-70/Z40-75/G41-35
Lenovo G50-30/G50-45/G50-70/G50-70m/G50-80/G50-80 Touch/
Z50-70/Z50-75/G51-35
:Mutes/unmutes the sound. :Enables/disables Airplane
mode.
:Decreases the volume level. :Displays all currently active
apps.
:Increases the volume level. :Turns on/off the backlight of
the LCD screen.
:Closes the currently active
window. :
Toggles the display between
the computer and an external
device.
:Refreshes the desktop or the
currently active window. :Decreases the display brightness.
:Enables/disables the
touchpad. :Increases the display brightness.

Chapter 1. Getting to know your computer
7
Setting hotkey mode
By default, the hotkey functions are accessible by pressing the appropriate
hotkey. However, you can disable the hotkey mode in the BIOS setup utility.
To disable the hotkey mode:
1 Shut down the computer.
2 Press the Novo button and then select BIOS Setup.
3 In the BIOS setup utility, open the Configuration menu, and change the
setting of HotKey Mode from Enabled to Disabled.

8
Chapter 1. Getting to know your computer
4 Open the Exit menu, and select Exit Saving Changes.
Note: When hotkey mode is disabled, press the Fn key and the appropriate hotkey to
access the corresponding hotkey function.

Chapter 1. Getting to know your computer
9
Left-side view --------------------------------------------------------------------------------------
AC power
adapter jack
Connectthe AC power adapter here.
Novo button
When the computer is off or in hibernation mode, press
this button to startthe Lenovo OneKey Recovery System
or the BIOSsetup utility, or to enter the bootmenu.
Note: For details, see “Lenovo OneKey Recovery System” on page 26.
Ventilation slots
Dissipate internal heat.
Note: Make sure thatthe ventilation slots are notblocked or else the computer may overheat.
VGA port Connects to external display devices.
RJ-45 port
Connects the computer to an Ethernetnetwork.
Note: For details, see “Connectingnetwork cables” on page 11.
HDMI port
Connects to devices with HDMI input such as a TV or an
external display.
USB port Connects to USB devices.
Notes:
•The blue portis a USB 3.0 port.
•For details, see “ConnectingUSB device” on page 10.
1 2 3 4 5 6 7
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b
c
d
e
f
g

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Chapter 1. Getting to know your computer
Connecting USB device
Your computer comes with three USB ports compatible with USB devices.
The first time you plug a USB device into a particular USB port on your
computer, Windows automatically installs a driver for that device. After the
driver has been installed, you can disconnect and reconnect the device
without performing any additional steps.
Before disconnecting a USB storage device, make sure your computer has
finished transferring data to that device. Click the Safely Remove Hardware
and Eject Media icon in the Windows notification area to remove the device
before disconnecting.
Note: Typically, Windows detects a new device after it has been connected, and then installs
the driver automatically. However, some devices may require you to install the driver
before connecting. Check the documentation provided by the device’s manufacturer
before connecting the device.
Note: If your USB device uses a power cord, connect the device to a power source before
connecting it. Otherwise, the device may not be recognized.

Chapter 1. Getting to know your computer
11
Connecting network cables
To insert a network cable, do the following:
1 Hold one connector of the network cable to press the RJ-45 cover down
gently .
2 Insert the connector into the RJ-45 port .
Software configuration
Consult your Internet Service Provider (ISP) for details on how to configure
your computer.
a
b
1
2

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Chapter 1. Getting to know your computer
Right-side view -----------------------------------------------------------------------------------
Combo audio
jack
Connects to headset.
Notes:
•The combo audio jack does not support conventional microphones by default.
•The recording function may not be supported if third-party headphones or headsets are
connected, due to different industry standards.
Memory card slot
Insert memory cards (not supplied) here.
Note: For details, see “Using memory cards (not supplied)” on page 13.
USB port Connects to USB devices.
Notes:
•The blue port is a USB 3.0 port.
•For details, see “Connecting USB device” on page 10.
Optical drive Reads/burns optical discs.
Kensington lock
slot
Attach a security lock (not supplied) here to help protect
your computer from theft and unauthorized use.
You can attach a security lock to your computer to help
prevent it from being removed without your permission.
For details on installing the security lock, please refer to
the instructions shipped with the security lock that you
have purchased.
Notes:
•Before purchasing any security product, verify that it is compatible with this type of
security keyhole.
•You are responsible for evaluating, selecting, and implementing the locking devices and
security features. Lenovo offers no comment judgment or warranty regarding the
function, quality or performance of locking devices and security features.
1 2 3 4 5
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b
c
d
e

Chapter 1. Getting to know your computer
13
Using memory cards (not supplied)
Your computer supports the following types of memory cards:
• Secure Digital (SD) card
• Secure Digital High Capacity (SDHC) card (G41-35/G51-35)
• Secure Digital eXtended Capacity (SDXC) card (G41-35/G51-35)
• MultiMediaCard (MMC)
Inserting a memory card
Slide the memory card in until it clicks into place.
Removing a memory card
1 Push the memory card in until you hear a click.
2 Gently pull the memory card out of the memory card slot.
Notes:
•Insertonly one card in the slot at a time.
• This card reader does not support SDIO devices (e.g., SDIO Bluetooth and so on.).
Notes:
• Before removing the memory card, disable it by using the Windows safely remove
hardware and eject media utility to avoid data corruption.
• For select models, you can pull the memory card out directly while removing it from the
slot. Please refer to the actual product.

14
Chapter 1. Getting to know your computer
Front view -----------------------------------------------------------------------------------------------
System status
indicators
Symbol Indicator Indicator
status
Charge
status Meaning
Power
On (solid
white) --- The computer is powered on.
Blinking --- The computer is in sleep mode.
Off --- The computer is powered off.
Battery
On (solid
white)
Charging The battery has more than 80%
charge.
Discharging The battery has more than 20%
charge.
On (solid
amber) Discharging The battery has between 5% and 20% charge.
Blinking
slowly
(white)
Charging
The battery has between 20% and
80% charge. When the battery
reaches 80% charge, the light will
stop blinking. However, charging
will continue until the battery is
fully charged.
Blinking
slowly
(amber)
Charging
The battery has less than 20%
charge. When the battery charge
reaches 20%, the blinking color will
change to white.
Blinking
quickly
(amber)
Charging/
Discharging The battery has less than 5% charge.
1
a