Lenovo Y471A manual Display problems, Password problem, Keyboard problems

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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.

 

 

Keyboard problems

 

 

 

A number appears when you enter

• The numeric lock function is on. To disable it, press Fn + F8.

a letter.

 

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Contents IdeaPad Y471A Regulatory Notice First Edition May Copyright Lenovo Contents Page Getting to know your computer Top viewIndicators Volume buttons Wireless modulePower button Getting to know your computerMicrophone jack RJ-45 portUSB port Headphone jackUSB combo port Optical drive AC power adapterJack Kensington slot System status Battery pack Battery latch manual Bottom viewLearning the basics „ Connecting to the power„ Configuring the operating system „ Reading the manualsPutting your computer into sleep state Learning the basicsShutting down your computer „ Removing the battery pack „ Checking battery status„ Charging the battery „ Handling the batteryUsing the touchpad Touchpad button„ Numeric keypad „ Function key combinationsLearning the basics Inserting a memory card „ Using memory cards not suppliedRemoving a memory card „ Connecting USB devices „ Connecting a Bluetooth device Enabling Bluetooth communications on your computerMute/Unmute Volume down Volume up „ Volume buttons b- d„ OneKey Rescue system button a Intelligent mode Normal modeMovie mode „ OneKey Theater button eEfficient thermal dissipation mode Standard modeSuper silent mode Performing dust cleaningF g Page „ Using passwords „ Using VeriFace„ Attaching a security lock not supplied AMD Muxless ATI Switchable Graphics Technology PowerXpress Switchable Graphics in two modes on select models Switching between Mode 1 and Mode„ Hardware connection Connecting to the Internet„ Software configuration CableEnabling wireless connection „ Using Wi-Fi/WiMAXConnecting to the Internet Software configurationOneKey Rescue system „ Introduction„ Creating a recovery discs OneKey Rescue systemTroubleshooting Frequently asked questionsTroubleshooting When do I need to restore the system to the factory status?Password problem Display problemsKeyboard problems Computer screen problems Troubleshooting Sleep or hibernation problemsSound problems Startup problem Troubleshooting Battery problemsHard disk drive problem OneKey Rescue system problemsTroubleshooting Other problems Appendix. CRU instructions Appendix. CRU instructions Handling a hard disk driveAppendix. CRU instructions Appendix. CRU instructions Appendix. CRU instructions Sdram Appendix. CRU instructions Appendix. CRU instructions Removing the optical drive Trademarks Page New World. New Thinking.TM
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