Lenovo B450 Laptop User Guide

NewWorld.New Thinking.TM
www.lenovo.com
©Lenovo China 2009
P/N: 147002479Printed in China
B450 User Guide V1.0 cover_1-4
Lenovo
B450
User Guide V1.0 

First Edition (July 2009)
© Copyright Lenovo 2009
B450 User Guide V1.0 cover_2-3
If your product is not working correctly, 
DO NOT RETURN IT TO THE STORE.
For technical assistance, contact a Lenovo support 
specialist 24 hours a day by calling toll free 1-877-4 
LENOVO (1-877-453-6686).   
Additionally, you can find support information and updates 
on the Lenovo Web site located at 
http://consumersupport.lenovo.com.
* Only for the users from the United States.
LENOVO  products,  data,  computer...

Respective Users
Dear user,
Thanks for purchasing Lenovo notebook! Before using this product, 
please make sure to read this User Guide carefully.
We are most honored to have you as our customer. In order to make sure 
you master the usage of Lenovo notebook soon, we have prepared this 
User Guide for you. This manual has been made very simple and 
comprehensive. In this manual, you can get information on the system 
configuration, installation steps and the basic operating systems. We 
strongly...

Explanation of hard disk capacity
Dear user,
While using your computer, you may find that the nominal hard disk 
capacity indicated is somewhat different from the disk capacity 
displayed by the operating system. For example, a nominal 40GB hard 
disk will appear as less than 40GB in the operating system. This 
discrepancy is not an error in hard disk installation nor any other 
problem, but a normal phenomenon of computers. This phenomenon is 
primarily due to the following reasons:
I. Different...

In addition, if a portion of the hard disk space has been used for some 
specific purpose, then the capacity indicated by the operating system will 
be even less than X × 0.931 G.
II. A portion of the hard disk space is used for specific purposes
Lenovo computers may come with preinstalled OneKey Rescue System, so 
the hard disk has a special portion partitioned before delivery, which is 
used to store hard disk mirror and OneKey Rescue System program files. 
The size of the reserved space for this...

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Important safety information...... iii
Important safety information ....iii
Chapter 1. Getting to know your 
computer ....................................... 1
Top view ........................................ 1
Left-side view ............................... 3
Right-side view............................. 4
Front view ..................................... 5
Bottom view .................................. 6
Chapter 2. Learning the 
basics ............................................ 8
First...

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Contents
Appendix B. Use and care 
information .................................. 59
Caring for your computer ........ 59
Accessibility and comfort ......... 65
Maintenance ............................... 67
Appendix C. Lenovo limited 
warranty ...................................... 72
Warranty information ............... 82
Appendix D. Customer replaceable 
units (CRUs) ................................ 86
Appendix E. Notices................... 88
Notices ......................................... 88...

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Important safety information
Important safety information  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This information can help you safely use your notebook personal 
computer. Follow and retain all information included with your computer. 
The information in this document does not alter the terms of your purchase 
agreement or the Lenovo Limited Warranty. For more information, see 
“Appendix C. Lenovo limited warranty” on page 72.
„Read this first
Personal...

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Important safety information
Unpack
Inspect the covers of the computer and the AC adapter, especially 
parts with the following labels attached for any crack or damage.
Danger:
 Hazardous voltage, current, and energy levels are present 
inside any component that has this label attached.