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Lenovo Z570, Z370, Z470 manual Troubleshooting, Display problems

Models: Z570 Z470 Z370

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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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Lenovo Z570, Z370, Z470 manual Troubleshooting, Display problems

Contents

IdeaPad Z370/Z470/ Z570 User GuideRegulatory Notice First Edition December Copyright LenovoContents Chapter 3. Connecting to theChapter 5. Troubleshooting Chapter 2. Learning thePage Top view Chapter 1. Getting to know your computerZ370/Z470 „ Z570 Chapter 1. Getting to know your computerb Wireless module antennas c Computer display d Speakers e Power button f OneKey Rescue system buttona Integrated camera„ Z370/Z470 Left-side viewc Fan louvers d VGA portg eSATA/USB combo porth USB port Chapter 1. Getting to know your computer„ Z370 „ Z470Right-side view c Optical drived USB port f RJ-45 portChapter 1. Getting to know your computer This port connects the computer to an Ethernet networka GPU switch on select models b Integrated wireless device switch Front viewc Memory card slot Chapter 1. Getting to know your computerChapter 1. Getting to know your computer Bottom view„ Z370 a b c d „ Z470Chapter 1. Getting to know your computer b Battery pack d Battery latch - spring loaded„ Z570 Chapter 1. Getting to know your computer„ Connecting to the power „ Configuring the operating systemInstalling the battery pack Connecting the computer to an electrical outlet„ Putting your computer into sleep state or shutting it down „ Shutting down your computerPutting your computer into sleep state Chapter 2. Learning the basicsUsing AC adapter and battery „ Checking battery status„ Charging the battery Chapter 2. Learning the basicsChapter 2. Learning the basics „ Removing the battery pack„ Handling the battery Chapter 2. Learning the basics Using the touchpada Touchpad Using the keyboard „ Numeric keypad Z370/Z470Z570 Chapter 2. Learning the basicsChapter 2. Learning the basics „ Function key combinationsb b a Chapter 2. Learning the basics Enter sleep mode Turn on/off the backlight of the LCD screenConnecting external devices „ Using memory cards not suppliedInserting a memory card Removing a memory card„ Connecting USB devices Chapter 2. Learning the basicsModel Number of USB portChapter 2. Learning the basics „ Connecting Bluetooth enabled devices on select modelsEnabling Bluetooth communications on your computer „ Volume buttons b~d „ OneKey Rescue system button aSpecial keys and buttons b c d e f„ OneKey Theater button e Normal modeMovie mode Music mode„ Thermal management button f Standard modeSuper silent mode Efficient thermal dissipation modePerforming dust cleaning Chapter 2. Learning the basicsSystem status indicators a Caps lock indicator b Num lock indicatorc Hard disk drive indicator d GPU switch indicator on select models e Touchpad indicatorChapter 2. Learning the basics f Power status indicator g Battery status indicator h Wireless communication indicator„ Using VeriFace „ Attaching a security lock not suppliedSecuring your computer Chapter 2. Learning the basicsChapter 2. Learning the basics „ Using passwordsEnabling NVIDIA Optimus on select models Wireless network technology connect without wiring Chapter 3. Connecting to the InternetWired connection „ Software configuration Chapter 3. Connecting to the Internet„ Hardware connection CableWi-Fi WiMAX Wireless connectionChapter 3. Connecting to the Internet „ Using Wi-Fi/WiMAX on select models Enabling wireless connection Software configurationHardware connection Chapter 3. Connecting to the Internet„ Using Lenovo OneKey Recovery within Windows operating system For more instructions, see the Help file of Lenovo OneKey RecoveryChapter 4. OneKey Rescue system „ IntroductionChapter 4. OneKey Rescue system „ Using Lenovo OneKey Rescue system without Windows operating system„ Creating a recovery discs The estimated number of discs needed will be displayed before the process of creating the recovery discs begins. To minimize the number of discs needed, use recordable DVDs as the media. Also make sure your optical drive is compatible with the disc intended for use Chapter 4. OneKey Rescue systemChapter 5. Troubleshooting Frequently asked questionsChapter 5. Troubleshooting Where can I find warranty information?How can I install the device drivers? What can I do if the backup process fails?Chapter 5. Troubleshooting TroubleshootingDisplay problems Sleep or hibernation problems Chapter 5. Troubleshooting Password problemsKeyboard problems If the computer does not return from sleep mode, it may Computer screen problemsChapter 5. Troubleshooting Chapter 5. Troubleshooting Sound problems Battery problemsA hard disk drive problem A startup problemChapter 5. Troubleshooting Other problems Replacing the battery pack Appendix A. CRU instructionsAppendix A. CRU instructions b c a14 Install a fully charged battery pack 5 Slide the manual battery latch to the locked positionReplacing the hard disk drive Handling a hard disk driveDo not touch the connector Appendix A. CRU instructionsZ370 Appendix A. CRU instructions5 Remove the frame fixing screws c c cAppendix A. CRU instructions A Reinstall the frame fixing screws Appendix A. CRU instructionsZ470 Z470/Z570Appendix A. CRU instructions Z470 Appendix A. CRU instructionsZ570 6 Pull the tab in the direction shown by arrow d d’ dAppendix A. CRU instructions Appendix A. CRU instructions Z5707 Take out the hard disk drive secured in a metal frame e Z470Appendix A. CRU instructions Z570Replacing memory Appendix A. CRU instructionsAppendix A. CRU instructions b aa0 Reinstall and tighten the screws A Reinstall the battery To make sure that the DDR3 SDRAM is installed correctly, do as follows Appendix A. CRU instructionsRemoving the optical drive Appendix A. CRU instructionsTo remove the optical drive, do the following 2 Remove the screw shown in the illustration aUser Guide Setup PosterAppendix A. CRU instructions Trademarks Page Lenovo China New World. New Thinking.TMV1.0en-US