Lenovo Z575, Z475 manual Troubleshooting, Display 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 Rescue system. 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 backlight for the LCD screen has been turned off.

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Contents IdeaPad Z475/Z575 Regulatory Notice First Edition April Copyright Lenovo Contents Page Getting to know your computer „ Z475Top view „ Z575 Getting to know your computerGetting to know your computer Integrated Camera Wireless module antennas Computer displaySpeakers Power button OneKey Rescue system button Thermal management buttonVGA port Left-side viewFan louvers RJ-45 portESATA/USB Getting to know your computer Combo port USB port„ Z475 „ Z575 Right-side viewOptical drive Getting to know your computer RJ-45 port Integrated wireless device switch Memory card slot Front viewBottom view Battery pack Learning the basics „ Connecting to the power„ Configuring the operating system „ Reading the manuals„ Shutting down your computer Putting your computer into sleep stateLearning the basics „ Checking battery status „ Charging the battery„ Removing the battery pack „ Handling the batteryUsing the touchpad Using the keyboard „ Numeric keypad Z475Z575 „ Function key combinations Learning the basics Connecting external devices Inserting a memory cardRemoving a memory card „ Connecting USB devices „ Connecting Bluetooth enabled devices on select models Enabling Bluetooth communications on your computer„ Volume buttons b~d „ OneKey Rescue system button aSpecial keys and buttons „ OneKey Theater button e Efficient thermal dissipation mode Standard modeSuper silent mode „ Thermal management button fPerforming dust cleaning System status indicators „ Using VeriFace „ Attaching a security lock not suppliedSecuring your computer „ Using passwords Connecting to the Internet Wired connection„ Software configuration Connecting to the Internet„ Hardware connection Wireless connection Wi-Fi WiMAXSoftware configuration Hardware connectionOneKey Rescue system „ IntroductionOneKey Rescue system „ Creating a recovery discs OneKey Rescue system OneKey Rescue system Troubleshooting Frequently asked questionsWhere can I find warranty information? Troubleshooting Display problemsTroubleshooting Password problems Keyboard problemsSleep or hibernation problems Computer screen problems Puter does not workHard disk drive problem Troubleshooting Sound problemsBattery problems Startup problemTroubleshooting Other problems RespondReplacing the battery pack Appendix A. CRU instructionsAppendix A. CRU instructions Replacing the hard disk drive Handling a hard disk driveZ475 Z575 Pull the tab in the direction shown by arrow d Take out the hard disk drive secured in a metal frame e Appendix A. CRU instructions Replacing memory Appendix A. CRU instructions Appendix A. CRU instructions Removing the optical drive Setup Poster User Guide Trademarks Page New World. New Thinking.TM