Lenovo B50 70 Laptop User Guide

							Lenovo
B40/B50/N40/N50
Read the safety notices and important tips in the 
included manuals before using your computer.
User Guide 
						

							
First Edition  (December 2014) © Copyright Lenovo 2014.  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 might not be available on your computer and/or your 
computer might include features that are not described in this user 
guide.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered p\
ursuant a General 
Services Administration “GSA” contract, use, reproduction, or disc\
losure is subject to restrictions set 
forth in Contract No. GS-35F-05925.
Notes

Some instructions in this guide may assume that you are using 
Windows
® 7 or Windows® 8.1. If you are using other Windows 
operating systems, some operations may be slightly different. If you are\
 
using other operating systems, some operations may not apply to you.


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 the Lenovo B50-70 unless 
otherwise stated.

For details, refer to 
Guides & Manuals  at http://support.lenovo.com.
Regulatory Notice
 
						

							Lenovo
User Guide
Instructions and technical information in this manual are applicable to the following 
Lenovo notebook computers unless otherwise stated.
Model name                  MT
Lenovo B40-30                           20390, 80F1
Lenovo B40-70                                        20392, 80F3
Lenovo B40-45                                        20394, 80F5 
Lenovo B50-30                                        20382, 80ES
Lenovo B50-30 Touch                            20383, 80ET
Lenovo B50-70                                        20384, 80EU
Lenovo B50-45                                        20388, 80F0                         
Lenovo N40-30                                       20460, 80H4                                                                
Lenovo N40-70                                       20462, 80H6
Lenovo N50-70                                       20439, 80HA
Lenovo N40-45                                       20461, 80H5
Lenovo N50-45                                       20441, 80HC
Lenovo B40-80                                        20395, 80F6, 80LS
Lenovo B50-80                                        20386, 80EW, 80LT
Lenovo N40-80                                       20463, 80H7
Lenovo N50-80                                       20440, 80HB 
						

							i
Chapter 1. Getting to know your computer .......................................... 1
Top view .......................................................................................................................1
Left-side view .............................................................................................................. 6
Right-side view .......................................................................................................... 10
Front view .................................................................................................................. 12
Bottom view ............................................................................................................... 14
Chapter 2. Learning the basics............................................................ 15
Configuring the operating system for the first time ............................................ 15
Putting the computer to sleep or shutting it down .............................................. 15
Connecting to a wireless network .......................................................................... 18
Help and support ...................................................................................................... 19
Operating system interfaces (for the Windows 8.1 operating system) ............. 20
Charms and the charms bar (for the Windows 8.1 operating system).............. 21
Chapter 3. Lenovo OneKey Recovery system ................................... 23
Chapter 4. Troubleshooting ................................................................. 25
Frequently asked questions ..................................................................................... 25
Troubleshooting ........................................................................................................ 28
Appendix A. CRU instructions............................................................. 32
Replacing the battery pack....................................................................................... 33
Replacing the hard disk drive ................................................................................. 34
Replacing the memory ............................................................................................. 37
Replacing the wireless LAN card ........................................................................... 40
Replacing the optical drive ...................................................................................... 42
Replacing the keyboard............................................................................................ 44
Trademarks............................................................................................ 47
Contents 
						

							1
Chapter 1. Getting to know your computer
Top view  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
„B40-30/N40-30/B40-70/N40-70/B40-45/N40-45/B40-80/N40-80 
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							2
Chapter 1. Getting to know your computer
„B50-30/B50-30 Touch/B50-70/N50-70/B50-45/N50-45/B50-80/ 
N50-80
Note: 
•The dashed areas indicate parts that are invisible from the outside.
The illustrations may differ from the actual product. Please refer to the actual product.
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 can be damaged.
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							Chapter 1. Getting to know your computer
3
Integrated camera 
(on select models)Used for video communication or taking photos.
Built-in microphone 
(on select models)Used for video conferencing, voice narration, or 
audio recording.
Wireless antennas 
(on select models)
Connects to a wireless adapter to receive and send 
wireless radio signals.
DisplayProvides visual output.
SpeakersProvides audio output.
Power buttonPress this button to turn on the computer.
Fingerprint reader 
(on select models)
Registers fingerprints that can be used as 
passwords to secure your computer.
TouchpadPerforms the same respective functions as a 
conventional mouse.
Slide your fingertip on the touch pad in the 
direction you wish to move the cursor.
Touchpad buttonsPerforms the functions of the left and right buttons 
as those of the left and right buttons on a 
conventional mouse.
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d
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							4
Chapter 1. Getting to know your computer
„Using the keyboard
Your computer has a numeric keypad, hotkeys, and function keys 
incorporated in its standard keyboard.
Numeric keypad (Applicable for B50/N50 Series)
The keyboard has a separate numeric keypad. To enable or disable the 
keypad, press the Numeric Lock key (Num Lock).
Hotkeys
You can access certain system settings quickly by pressing the appropriate 
hotkeys.
: Mutes/unmutes the sound.: Enables/disables Airplane 
mode.
: Decreases the volume level.: Switches the active program.
: Increases the volume level.: Turns the LCD screen backlight 
on/off.
: Closes the currently active 
window.: Projects to a connected display.
: Refreshes the desktop or the 
currently active window.: Decreases display brightness.
: Enables/disables the touchpad.: Increases display brightness.
Note: If you change the HotKey Mode from Enabled to Disabled in the BIOS setup utility, 
you need to press the Fn key in combination with the appropriate hotkey.
Insert PrtSc DeleteHome EndPgUp
PgDnPause Break ScrLk SysRq
Fn
Note: The numeric lock indicator is on when the numeric keypad is enabled.