Lenovo B450 User manual

New World. New Thinking.TM

www.lenovo.com

©Lenovo China 2009

P/N: 147002479

Printed in China

B450 User Guide V1.0 cover_1-4

Lenovo

B450

User Guide V1.0

First Edition (July 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 software, and services have been developed exclusively at private expense

and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and

restricted rights to use, reproduction and disclosure. LIMITED AND RESTRICTED RIGHTS NOTICE: If

products, data, computer software, or services are delivered pursuant a General Services Administration “GSA”

contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

•Before using this information and the product it supports, be sure to read Important safety

information on page iii and Notices in Appendix E first.

•Some instructions in this guide may assume that you are using Windows Vista®. 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, but it won’t substantially affect

your use of this computer.

•The features described in this guide are common to most models. Some features may not be

available on your computer and/or your computer may include features that are not described in

this user guide.

•The illustrations in this manual may differ from the actual product. Please refer to the actual

product.

Notes

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 recommend that in using this product, please be sure to carefully

read the manual. It will actually help you make better use of the computer.

We have done our best to avoid human errors in making sure that the

information provided in the manual is accurate and reliable. However, we

cannot completely guarantee that there will not be any mistakes that were

not found and checked out before printing.

Please bear with us because there might also be some uncontrolled

omissions while printing, binding or distributing.

Because we are trying to improve the full performance and reliability of our

equipment, the hardware and software components might need some little

adjustment. In this case, this might lead to an inconsistency in the actual

makeup of the equipment to that of the information stated in the manual,

but it will not substantially affect your use.

Thanks for your cooperation!

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 standards used by the manufacturer and operating

system when calculating hard disk capacity

Hard disk manufacturers use a radix of 1000, i.e., 1G = 1,000MB, 1MB =

1,000KB, 1KB = 1,000 bytes. However, when identifying hard disk capacity,

operating systems use a radix of 1024, i.e., 1GB = 1,024MB, 1MB = 1,024KB,

1KB = 1,024 bytes. The standard adopted by your computer is that of the

hard disk manufacturers. Since the standards adopted by the hard disk

manufacturer and operating system are different, the hard disk capacity

displayed by the operating system will be different from the nominal hard

disk capacity.

For example, if the hard disk is nominally X G, even when it is completely

empty, the capacity displayed by the operating system will be:

X × 1000 × 1000 × 1000/ (1024 × 1024 × 1024) ≈X × 0.931 G

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 partition varies according to the

model, operating system and software of the computer. For the sake of

safety, this partition is not apparent, which is commonly referred to as a

“hidden partition”.

In addition, after the hard disk is partitioned or formatted, the system will

assign a certain amount of hard disk space for the system files.

For the above reasons, the available hard disk space indicated by the

operating system is always less than the computer’s nominal hard disk

capacity.

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 use..........................................8

Using AC adapter and

battery..........................................11

Using the touchpad....................14

Using the keyboard....................15

Special keys and buttons...........18

System status indicators............19

Securing your computer............20

Connecting external devices.....22

Chapter 3. Using the Internet .... 24

Wired connection .......................24

Wireless connection ...................26

Chapter 4. OneKey Rescue

System .........................................28

OneKey Rescue System .............28

Chapter 5. Troubleshooting .......31

Frequently Asked Questions ....31

Troubleshooting .........................34

Chapter 6. Upgrading and

replacing devices ........................42

Replacing the battery.................42

Replacing the hard disk

drive .............................................44

Replacing memory .....................48

Removing the optical drive ......52

Appendix A. Getting help and

service..........................................54

Getting help on the Web ...........55

Calling the customer support

center............................................55

Getting help around the

world............................................58

Lenovo warranty service

telephone numbers.....................58

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

Wireless related

information ................................. 91

Electronic emissions notices..... 94

WEEE and recycling

statements ................................. 101

Turkish statement of

compliance................................ 101

Türkiye EEE Yönetmeliğine

Uygunluk Beyanı........................ 101

EU WEEE statements .............. 102

Japan recycling statements..... 103

Notice for users in the

U.S.A.......................................... 105

Notice on deleting data from

your hard disk .......................... 105

Appendix F. Features and

Specifications........................... 107

Trademarks............................... 109

Index.......................................... 110

iii

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 computers are electronic devices. Power cords, power adapters,

and other features can create potential safety risks that can result in

physical injury or property damage, especially if misused.

The safety risks are categorized as follows:

Danger:

Physical injury or even death may be caused.

Attention:

Property damage or even minor injury may be caused.

To protect yourself from hazards and create a safer computer work

environment, follow the instructions hereafter.





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.



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