Lenovo B450 Laptop User Guide

Chapter 3. Using the Internet
27 „Using Wi-Fi (specific models only)
Enabling wireless connection
To enable wireless communications, do the following:
1Slide the integrated wireless device switch to  .
2Press Fn + F5 to make configuration.
Hardware connection
Software configuration
Consult your Internet Service Provider (ISP) and search Windows Help and 
Support Center for details on how to configure your computer.
Access point *
Wi - Fi
* Not supplied 

28
Chapter 4. OneKey Rescue System
OneKey Rescue System  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
„Introduction 
The Lenovo OneKey Rescue System is an easy-to-use application that can 
be used to back up the data on your system partition (C drive) for easy 
restore when required. You can run Lenovo OneKey Recovery under the 
Windows operating system, and the OneKey Rescue System without 
starting the Windows operating system.
Attention:
In order to utilize the features of...

Chapter 4. OneKey Rescue System
29 „Using Lenovo OneKey Recovery (Within Windows operating 
system)
In Windows operating system, double click the OneKey Recovery System 
Icon on the desktop to launch Lenovo OneKey Recovery. 
Within the program, you can back up the system partition on the hard disk 
drive, other storage devices, or by creating recovery discs. 
For more instructions, see the help file of Lenovo OneKey 
Recovery.
Notes:
The backup process and creation of recovery discs may take some time,...

30
Chapter 4. OneKey Rescue System
„Using Lenovo OneKey Rescue System (Without Windows 
operating system)
In the event that the operating system cannot be loaded, follow the steps 
below to access OneKey Rescue System.
 Shut down your computer.
 Press the   key to launch OneKey Rescue System.
Within the program, you can choose to restore your system partition to the 
original factory status, or to a previously generated backup. 
Note:The recovery process is irreversible. Make sure to back up any critical...

31
Chapter 5. Troubleshooting
Frequently Asked Questions  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This section lists frequently asked questions and tell where you can find detailed 
answers. For details about each publication included in the package with your 
computer, see Lenovo B450 Setup Poster. 
What safety precautions should I follow when using my computer?
See “Important safety information” on page iii of this guide.
How can I prevent...

32
Chapter 5. Troubleshooting
Where are the recovery discs?
Your computer did not come with a recovery disc. For an explanation of 
the alternative recovery methods offered by Lenovo, see “Chapter 4. 
OneKey Rescue System” on page 28.
How can I contact the customer support center?
See “Appendix A. Getting help and service” on page 54 of this guide. 
Where can I find warranty information?
For the warranty applicable to your computer, including the warranty 
period and type of warranty service, see...

Chapter 5. Troubleshooting
33
What can I do if the backup process fails?
If you can start the backup feature without a problem, but it fails during 
the backup process, please try the following steps:
1Close other applications, then restart the backup process.
2Check if the destination media is damaged, try to select another path
and then try again.
When do I need to restore the system to the factory status?
You can use this feature when your system fails or you need to re-install 
your operating system....

34
Chapter 5. Troubleshooting
Troubleshooting  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
If you do not find your problem here, see Chapter 2. The following section only 
describes problems that might negate the need to refer to the more 
comprehensive information in Chapter 2.
Display problems
When I turn on the compu-
ter, nothing appears on the 
screen.If the screen is blank, make sure that:
-...

Chapter 5. Troubleshooting
35
My screen goes blank while 
the computer is on.Your screen saver or power management may be 
enabled. Do one of the following to exit from the 
screen saver or to resume from sleep or hibernation 
mode:
- Touch the touchpad.
- Press any key on the keyboard.
- Press the power button.
A Password problem
I forgot my password.If you forget your user password, you must take 
your computer to a Lenovo authorized servicer or a 
marketing representative to have the password...

36
Chapter 5. Troubleshooting
Keyboard problems
A number appears when 
you enter a letter.The numeric lock function is on. To disable it, press 
Fn + Insert.
Sleep or hibernation problems
The computer enters sleep 
mode unexpectedly.If the processor overheats, the computer automatically 
enters sleep mode to allow the computer to cool and to 
protect the processor and other internal components. 
Check the settings for sleep mode.
The computer enters sleep 
mode immediately after 
Power-on self-test...