Lenovo V470C, V570C manual Display problems, Password problem

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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 computer, nothing appears on the screen.

When I turn on the computer, only a white cursor appears on a blank screen.

My screen goes blank while the computer is on.

•If the screen is blank, make sure that:

-The battery is installed correctly.

-The AC adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

-The computer power is on. (Press the power button again for confirmation.)

-The memory is installed correctly.

•If these items are properly set, and the screen remains blank, have the computer serviced.

•Restore backed-up files to your Windows environment or the entire contents of your hard disk to the original factory contents using OneKey Recovery. If you still see only the cursor on the screen, have the computer serviced.

•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.

•Press Fn + F2 to confirm whether the LCD screen has been turned off.

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 changed.

 

• If you forget your HDD password, a Lenovo authorized servicer

 

cannot reset your password or recover data from the hard disk. You

 

must take your computer to a Lenovo authorized servicer or a

 

marketing representative to have the hard disk drive replaced. Proof

 

of purchase is required, and a fee will be charged for parts and

 

service.

 

• If you forget your supervisor password, a Lenovo authorized

 

servicer cannot reset your password. You must take your computer

 

to a Lenovo authorized servicer or a marketing representative to

 

have the system board replaced. Proof of purchase is required, and a

 

fee will be charged for parts and service.

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Contents Lenovo V470c/V570c Regulatory Notice Contents Page Getting to know your computer „ V470c„ V570c Built-in microphone Touchpad Getting to know your computer Numeric keypad V570cVGA port „ V470cFan louvers RJ-45 portUSB port Right-side view „ V470c „ V570cMemory card slot GPU Graphics Processing Unit switch Select models onlyDevice switch Select your computer Bottom view SIM card slot Select models only Learning the basics „ Conncting to the power„ Configuring the operating system „ Reading the manualsLearning the basics Shutting down your computer„ Removing the battery pack „ Checking battery status„ Charging the battery „ Handling the batteryLeft click button Right click buttonV570c „ Numeric keypadV470c „ Function key combinations Learning the basics Inserting a memory card „ Using memory cards not supplied„ Connecting a universal serial bus USB device Removing a memory card„ Connecting a Bluetooth device Select models only Enabling Bluetooth communications on your computerSwitching GPU Select models only To change the GPU, do the followingSpecial keys and buttons „ OneKey Rescue system buttonThese indicators inform you of the computer status „ V570c Page „ Fingerprint reader Select models only „ Using passwords„ Attaching a security lock not supplied „ Hardware connection Connecting to the Internet„ Software configuration CableEnabling wireless connection „ Using Wi-Fi/WiMAX Select models onlyConnecting to the Internet Software configuration„ Using Mobile Broadband Select models only Connecting to the Internet Inserting the SIM card V570c Connecting to the Internet Removing the SIM card OneKey Rescue system „ IntroductionTroubleshooting Frequently asked questionsTroubleshooting When do I need to restore the system to the factory status?Display problems Password problemSound problems Troubleshooting Sleep or hibernation problemsComputer screen problems Startup problem Troubleshooting Battery problemsHard disk drive problem OneKey Rescue system problemsTroubleshooting Other problems Page Appendix A. CRU instructions Handling a hard disk driveAppendix A. CRU instructions Appendix A. CRU instructions Appendix A. CRU instructions Sdram Appendix A. CRU instructions Appendix A. CRU instructions Removing the optical drive only for V470c Trademarks Do not Return IT to the Store If your product is not working correctlyNew World. New Thinking.TM
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