Lenovo B450 Laptop User Guide

							Chapter 1. Getting to know your computer
7
Battery latch - 
spring loadedThe spring-loaded battery latch keeps the battery pack 
secured in place.
Battery packFor details, see “Using AC adapter and battery” on page 11.
Memory/Hard 
Disk Drive (HDD) 
compartmentHouses the computer ’s memory and hard disk drive.
Fan louversDissipate internal heat.
Note:Make sure that none of the fan louvers are blocked or else overheating of the 
computer may occur.




 
						

							8
Chapter 2. Learning the basics
First use - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
„Read the manuals
Read the supplied manuals before using your computer.
„Connect to the power
The supplied battery pack is not fully charged at purchase.
To charge the battery and begin using your computer, insert the battery 
pack and connect the computer to an electrical outlet. The battery is 
automatically charged while the computer is running on AC power.
Install the battery pack
Refer to the supplied Setup Poster to install the battery pack.
Connect the computer to an electrical outlet
1Connect the power cord to the AC adapter.
2Connect the AC adapter to the AC power adapter jack of the computer.
3Plug the power cord into an electrical outlet. 
						

							Chapter 2. Learning the basics
9 „Turn on the computer
Press the power button to turn on the computer.
„Configure the operating system
You may need to configure the operating system when it is first used. The
configuration process may include the procedures below.
 Accepting the end user license agreement
 Configuring the Internet connection
 Registering the operating system
 Creating a user account 
„Putting your computer into sleep state or shutting it down 
When you finish working with your computer, you can put it into sleep 
state or shut it down.
Putting your computer into sleep state
If you will be away from your computer for only a short time, put the 
computer into sleep state.
When the computer is in sleep state, you can quickly wake it to resume use, 
and bypass the startup process. 
						

							10
Chapter 2. Learning the basics
To put the computer into sleep state, do one of the following.
 Click   and select Sleep from the Start menu.
Fn + F1.
Attention:
Wait until the power indicator light starts blinking (indicating that the 
computer is in sleep state) before you move your computer. Moving your 
computer while the hard disk is spinning can damage the hard disk, 
causing loss of data.
To wake the computer, do one of the following.
 Press the power button.
 Press any key on the keyboard.
„Shutting down your computer
If you are not going to use your computer for a day or two, shut it down.
To shut down your computer, click   and select Shut Down from the 
Start menu.
 
						

							Chapter 2. Learning the basics
11
Using AC adapter and battery - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
„Checking battery status
You can determine the percentage of battery power remaining by using 
Win do ws  Power Options.
„Charging the battery
When you find that the battery power is low, you need to charge the 
battery or replace it with a fully charged one.
The battery is charged when the AC adapter is connected to the computer 
and the battery is installed.
Charging time will depend on the usage environment.
You need to charge the battery in any of the following situations:
 When you purchase a new battery
 If the battery status indicator starts blinking
 If the battery has not been used for a long time
Note:As each computer user has different habits and needs, it is difficult to predict 
how long a battery charge will last. There are two main factors:
 The amount of energy stored in the battery when you commence work.
 The way you use your computer: for example, how often you access the 
hard disk drive and how bright you make the computer display. 
						

							12
Chapter 2. Learning the basics
„Removing the battery pack 
If you are not going to use the computer for an extended period of time, or 
if you need to send your computer to Lenovo for service, etc. remove the 
battery pack from the computer. Before removing the battery pack, make 
sure the computer has been shut down.
Notes:
You are advised to insert the battery pack when using your computer to prevent 
small particles from entering the inside of your computer.
To increase the life of the battery pack, the computer does not start recharging 
the battery immediately after it drops from fully charged.
Charge the battery at a temperature between 50 °F and 80 °F (10 °C-30 °C).
Full charge or discharge is not required. 
						

							Chapter 2. Learning the basics
13 „Handling the battery
If the rechargeable battery pack is replaced with an incorrect type, there may 
be danger of an explosion. The battery pack contains a small amount of 
harmful substances. To avoid possible injury and detriment to the 
environment, pay attention to the following points.
Notes:
Replace only with a battery of the type recommended by Lenovo.
Keep the battery pack away from fire.
Do not expose the battery pack to water or rain.
Do not attempt to disassemble the battery pack.
Do not short-circuit the battery pack.
Keep the battery pack away from children.
Do not put the battery pack in trash that is disposed of in landfills. When 
disposing of the battery, comply with local ordinances or regulations and your 
company’s safety standards. 
						

							14
Chapter 2. Learning the basics
Using the touchpad  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 
TouchpadTo move the cursor on the screen, slide your 
fingertip over the pad in the direction in which you 
want the cursor to move.
Click buttonClicking the left side of the button is the same as left-
clicking a conventional mouse.
Clicking the right side of the button is the same as 
right-clicking a conventional mouse.
Note:You can enable/disable the touchpad using Fn+F8.
a
b


 
						

							Chapter 2. Learning the basics
15
Using the keyboard - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Your computer has a numeric keypad and function keys incorporated in its 
standard keyboard. 
„Numeric keypad
The keyboard has keys that, when enabled, work as a 10-key numeric 
keypad.
To enable or disable the numeric keypad, press Fn+Insert.
Note:The   indicator will light on if the numeric keypad is enabled. 
						

							16
Chapter 2. Learning the basics
„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  .



b
a