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Lenovo Y450 manual Troubleshooting, My screen goes blank while the computer is on

Models: Y450

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Chapter 4. Troubleshooting

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

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.

My screen goes blank while the computer is on.

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.

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Lenovo Y450 manual Troubleshooting, My screen goes blank while the computer is on

Contents

User Guide Lenovo IdeaPad Y450Copyright Lenovo 2009. All rights reserved First Edition NovemberENERGY STAR model information Windows Vista Power plan BalancedAdvanced power settings Windows XPExplanation of hard disk capacity Page Chapter 1. Getting to know your computer ContentsChapter 2. Using your computer Chapter 3. Using external devicesAppendix C. Specifications ContentsChapter 4. Troubleshooting Chapter 6. Safety, use, and care informationAppendix D. Notices ContentsIndex Top view Chapter 1. Getting to know your computerChapter 1. Getting to know your computer Wireless LAN antennasSystem status indicators Power buttonChapter 1. Getting to know your computer Left-sideviewoverheating of the computer may occur Chapter 1. Getting to know your computerSecurity keyhole Fan louversChapter 1. Getting to know your computer Right-sidevieweSATA port AC power adapter jackIEEE 1394 connector Chapter 1. Getting to know your computerChapter 1. Getting to know your computer Front viewMicrophone jack external System status indicatorsIntegrated wireless device switch Chapter 1. Getting to know your computerChapter 1. Getting to know your computer Bottom viewChapter 1. Getting to know your computer Battery latch - spring loadedBattery latch - manual Battery packUsing the touchpad Chapter 2. Using your computerY450 Pinch Chapter 2. Using your computer„Gestures ChiralMotion„Palm Check Chapter 2. Using your computerChapter 2. Using your computer Using the keyboard„Numeric keypad „Function key combinations Chapter 2. Using your computerFn + Chapter 2. Using your computerIncrease/decrease computer volume Fn + PrtSc/SysRq System requestSpecial keys and buttons Chapter 2. Using your computer„Touch inductive panel with multi-mediabuttons Increase computer volume Chapter 2. Using your computerOpen Dolby function setup screen Mute/unmute the sound Decrease computer volumeFor details, see OneKey Rescue System User Guide Using the optical driveChapter 2. Using your computer „OneKey Rescue System buttonChapter 2. Using your computer Using memory cards„Inserting a memory card Chapter 2. Using your computer„Removing a memory card Using the integrated camera Using Lenovo remote specific models onlyChapter 2. Using your computer „Using RJ-45port Using the InternetChapter 2. Using your computer Chapter 2. Using your computer „Using wireless LANSecuring your computer Chapter 2. Using your computer„Attaching a security lock optional „Using passwords „Using VeriFaceChapter 2. Using your computer Chapter 2. Using your computer Installing device driversUsing battery and AC adapter „Checking battery statusChapter 2. Using your computer „Using the AC adapterChapter 2. Using your computer „Charging the batteryDanger „Handling the batteryChapter 2. Using your computer DangerConnecting a Universal Serial Bus USB device Chapter 3. Using external devicesChapter 3. Using external devices Chapter 3. Using external devices Connecting an eSATA deviceChapter 3. Using external devices Connecting an IEEE 1394 deviceChapter 3. Using external devices Connecting an ExpressCard/34 device„Inserting an ExpressCard device Chapter 3. Using external devices„Removing an ExpressCard device „Connecting a VGA monitor Connecting an external displayChapter 3. Using external devices Chapter 3. Using external devices „Connecting an HDMI monitorChapter 3. Using external devices Connecting a headphone and audio deviceListening to music at high volume over extended periods of time may damage your hearing Chapter 3. Using external devicesChapter 3. Using external devices Connecting an external microphoneChapter 3. Using external devices „Enabling Bluetooth communicationsFrequently asked questions Chapter 4. TroubleshootingHow can I contact the Customer Support Center? Chapter 4. TroubleshootingWhere are the recovery discs? Where can I find warranty information?„Display problems TroubleshootingChapter 4. Troubleshooting My screen goes blank while the computer is on Chapter 4. TroubleshootingI forgot my password „A password problem„Keyboard problems Chapter 4. TroubleshootingChapter 4. Troubleshooting „Sleep or hibernation problemsThe computer enters sleep mode unexpectedly Chapter 4. Troubleshooting „Computer screen problemsThe screen is blank The screen is unreadable or distorted Chapter 4. TroubleshootingIncorrect characters appear on the screen „Battery problems „Sound problemsChapter 4. Troubleshooting The battery does not charge „A hard disk drive problem„A startup problem Chapter 4. TroubleshootingChapter 4. Troubleshooting „Other problemsYour computer does not respond Getting help and service Chapter 5. Getting help and serviceChapter 5. Getting help and service Calling the Customer Support CenterGetting help on the Web The following items are not covered Chapter 5. Getting help and serviceƒMachine Type and Model Chapter 5. Getting help and serviceGetting help around the world Chapter 5. Getting help and serviceImportant safety information Chapter 6. Safety, use, and care information„Conditions that require immediate action Chapter 6. Safety, use, and care informationChapter 6. Safety, use, and care information „Safety guidelinesChapter 6. Safety, use, and care information „Service and upgradesDanger Chapter 6. Safety, use, and care information „Power cords and power adaptersDanger terminals and/or the connector terminals on a power adapter, which can eventually result in overheating Chapter 6. Safety, use, and care informationDanger Chapter 6. Safety, use, and care information„Extension cords and related devices „Plugs and outletsChapter 6. Safety, use, and care information „Power supply statementDanger Chapter 6. Safety, use, and care information „Lithium coin cell battery noticeDanger „Heat and product ventilation Chapter 6. Safety, use, and care informationDanger ƒDo not restrict or block any ventilation openings Chapter 6. Safety, use, and care informationChapter 6. Safety, use, and care information „CD and DVD drive safetyDanger Chapter 6. Safety, use, and care information „Electrical current safety informationDanger To connect 1.Turn everything OFF Chapter 6. Safety, use, and care information„Laser compliance statement Chapter 6. Safety, use, and care informationDanger Chapter 6. Safety, use, and care informationWhen a CD or DVD drive is installed, note the following handling instructions Danger„Liquid Crystal Display LCD notice Chapter 6. Safety, use, and care informationChapter 6. Safety, use, and care information „Be careful about where and how you workCaring your computer ƒPlace liquids away from your computer to avoid spills, and keep your computer away from water to avoid the danger of electrical shock Chapter 6. Safety, use, and care informationPrevent others from touching components Chapter 6. Safety, use, and care information„For outdoor use Chapter 6. Safety, use, and care information„Be gentle with your computer „Carry your computer properlyChapter 6. Safety, use, and care information „Data safety„Handle storage media and drives properly Chapter 6. Safety, use, and care information „Take care in setting passwords„Other important tips Chapter 6. Safety, use, and care information „Cleaning the cover of your computerChapter 6. Safety, use, and care information „Cleaning your computer keyboard„Cleaning your computer display Accessibility and comfortChapter 6. Safety, use, and care information „Ergonomic information Chapter 6. Safety, use, and care informationGeneral Posture Below are some general recommendations for assuming a healthy working posture. It is best to periodically make minor modifications in your working posture to deter the onset of discomfort caused by long periods of working in the same position. Frequent, short breaks from your work will also help to prevent any minor discomfort associated with your working posture Chapter 6. Safety, use, and care information„Questions about vision? MaintenanceChapter 6. Safety, use, and care information „What if you are traveling?Chapter 6. Safety, use, and care information „General tips for maintenanceƒBoot into the BIOS and load the default settings Chapter 6. Safety, use, and care informationhardware component on your computer has its own specific driver. If you add a new component, the operating system needs to be instructed on how to operate that piece of hardware. After you install the driver, the operating system can recognize the hardware component and understand how to use it Chapter 6. Safety, use, and care information„What this warranty covers Appendix A. Lenovo limited warrantyAppendix A. Lenovo limited warranty „How to obtain warranty serviceAppendix A. Lenovo limited warranty „Replacement of a product or part“Warranty Information.” „Your additional responsibilities Appendix A. Lenovo limited warranty„Use of personal information Appendix A. Lenovo limited warranty „What this warranty does not cover„Limitation of liability Appendix A. Lenovo limited warrantyAppendix A. Lenovo limited warranty „Dispute resolution„Other rights Appendix A. Lenovo limited warranty„European Economic Area EEA „Suplemento de Garantía para México Appendix A. Lenovo limited warrantyCP Tel Appendix A. Lenovo limited warrantyManufactured by China Shanghai, China Marketed byAppendix A. Lenovo limited warranty Warranty InformationAppendix A. Lenovo limited warranty „Types of warranty service1 Customer Replaceable Unit “CRU” service 4Customer carry-inor mail-inservice Appendix A. Lenovo limited warranty2On-siteservice 3Courier or depot service5Product exchange service Appendix A. Lenovo limited warrantyAppendix A. Lenovo limited warranty Lenovo warranty service telephone numbersWarranty service telephone numbers South Africa Appendix A. Lenovo limited warrantyAppendix B. Customer Replaceable Units CRUs Size Appendix C. SpecificationsSpecifications Environment ƒ TemperatureBattery pack Appendix C. SpecificationsU.S.A Attention Lenovo Director of Licensing Appendix D. NoticesLenovo United States, Inc 1009 Think Place - Building One Morrisville, NCAppendix D. Notices „Television output notice „Export classification noticeAppendix D. Notices „Wireless interoperability Wireless related informationAppendix D. Notices ƒHuman Interface Devices Keyboard/Mouse Appendix D. NoticesƒFile Transfer ƒSynchronization ƒAudio Gateway ƒHeadset ƒPrinterAppendix D. Notices „Usage environment and your health„Federal Communications Commission FCC statement Electronic emissions noticesAppendix D. Notices Responsible party Appendix D. Notices „German Class B compliance statementInformationen in Hinsicht EMVG Paragraf 4 Abs. 1 Appendix D. NoticesAppendix D. Notices „Korea Class B „Japanese VCCI Class B statementAppendix D. Notices „General recycling statement WEEE and recycling statementsAppendix D. Notices Appendix D. Notices EU WEEE statementsAppendix D. Notices Japan recycling statementsAppendix D. Notices „Disposing of a Lenovo computer componentsNotice for users in the U.S.A Notice on deleting data from your hard diskAppendix D. Notices Appendix D. Notices ƒUsing the preinstalled recovery program, bring the hard disk back to factory-shipstateTrademarks Appendix D. NoticesIndex Page Index LENOVO If your product is not working correctlyDO NOT RETURN IT TO THE STORE Lenovo China P/N New World. New Thinking.TM