Lenovo Y570, Y470 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 (Y470).

 

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Contents IdeaPad Y470/Y570 Regulatory Notice First Edition December Copyright Lenovo Contents Page Getting to know your computer „ Y470Wireless module „ Y570Getting to know your computer Antennas Computer displayGetting to know your computer Power button Indicators Volume buttonsOneKey Rescue System buttonRJ-45 port USB combo port USB portMicrophone jack Getting to know your computer Headphone jack AC power adapter „ Y470 „ Y570USB combo port TV-in jack On select models Optical driveProcessing Unit Switch on select Models Device switchGPU Graphics Bottom view Battery pack Battery latch manual „ Connecting to the power „ Configuring the operating systemLearning the basics „ Reading the manualsLearning the basics Putting your computer into sleep stateShutting down your computer „ Checking battery status „ Charging the battery„ Removing the battery pack „ Handling the batteryTouchpad button „ Numeric keypad Y470Y570 „ Function key combinations Learning the basics „ Using memory cards not supplied „ Connecting a universal serial bus USB deviceInserting a memory card Removing a memory card„ Connecting a Bluetooth device Enabling Bluetooth communications on your computer„ Volume buttons b- d Mute/Unmute Volume down Volume up„ OneKey Rescue system button a „ OneKey Theater button e Standard mode Super silent modeEfficient thermal dissipation mode Performing dust cleaningSystem status indicators Page „ Using VeriFace „ Using passwords„ Attaching a security lock not supplied Enabling Nvidia Optimus on select models „ Using 3D Vision on your computer Enabling 3D VisionConnecting to the Internet „ Software configuration„ Hardware connection Cable„ Using Wi-Fi/WiMAX Connecting to the InternetEnabling wireless connection Software configurationOneKey Rescue system „ IntroductionTroubleshooting Frequently asked questionsTroubleshooting When do I need to restore the system to the factory status?Display problems Password problemKeyboard problems Troubleshooting Sleep or hibernation problems Computer screen problemsSound problems Troubleshooting Battery problems Hard disk drive problemStartup 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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