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Lenovo Y450 manual Troubleshooting, „Display problems

Models: Y450

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Chapter 4. Troubleshooting

Troubleshooting ----------------------------------------------------------------------------

If you do not find your problem here, see Chapter 2. The following section only describes problems that might prevent you from accessing the comprehensive information in Chapter 2.

Display problems

When I turn on the computer, nothing appears on the screen.

Note:

If you are using an external monitor, see “Computer screen problems” on page 49.

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.

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Lenovo Y450 manual Troubleshooting, „Display problems

Contents

Lenovo IdeaPad Y450 User GuideFirst Edition November Copyright Lenovo 2009. All rights reservedENERGY STAR model information Windows XP Power plan BalancedAdvanced power settings Windows VistaExplanation of hard disk capacity Page Chapter 3. Using external devices ContentsChapter 2. Using your computer Chapter 1. Getting to know your computerChapter 6. Safety, use, and care information ContentsChapter 4. Troubleshooting Appendix C. SpecificationsContents Appendix D. NoticesIndex Chapter 1. Getting to know your computer Top viewPower button Wireless LAN antennasSystem status indicators Chapter 1. Getting to know your computerLeft-sideview Chapter 1. Getting to know your computerFan louvers Chapter 1. Getting to know your computerSecurity keyhole overheating of the computer may occurRight-sideview Chapter 1. Getting to know your computerChapter 1. Getting to know your computer AC power adapter jackIEEE 1394 connector eSATA portFront view Chapter 1. Getting to know your computerChapter 1. Getting to know your computer System status indicatorsIntegrated wireless device switch Microphone jack externalBottom view Chapter 1. Getting to know your computerBattery pack Battery latch - spring loadedBattery latch - manual Chapter 1. Getting to know your computerChapter 2. Using your computer Using the touchpadY450 ChiralMotion Chapter 2. Using your computer„Gestures PinchChapter 2. Using your computer „Palm CheckUsing the keyboard Chapter 2. Using your computer„Numeric keypad Chapter 2. Using your computer „Function key combinationsFn + PrtSc/SysRq System request Chapter 2. Using your computerIncrease/decrease computer volume Fn +Chapter 2. Using your computer Special keys and buttons„Touch inductive panel with multi-mediabuttons Mute/unmute the sound Decrease computer volume Chapter 2. Using your computerOpen Dolby function setup screen Increase computer volume„OneKey Rescue System button Using the optical driveChapter 2. Using your computer For details, see OneKey Rescue System User GuideUsing memory cards Chapter 2. Using your computerChapter 2. Using your computer „Inserting a memory card„Removing a memory card Using Lenovo remote specific models only Using the integrated cameraChapter 2. Using your computer Using the Internet „Using RJ-45portChapter 2. Using your computer „Using wireless LAN Chapter 2. Using your computerChapter 2. Using your computer Securing your computer„Attaching a security lock optional „Using VeriFace „Using passwordsChapter 2. Using your computer „Checking battery status Installing device driversUsing battery and AC adapter Chapter 2. Using your computer„Using the AC adapter Chapter 2. Using your computer„Charging the battery Chapter 2. Using your computerDanger „Handling the batteryChapter 2. Using your computer DangerChapter 3. Using external devices Connecting a Universal Serial Bus USB deviceChapter 3. Using external devices Connecting an eSATA device Chapter 3. Using external devicesConnecting an IEEE 1394 device Chapter 3. Using external devicesConnecting an ExpressCard/34 device Chapter 3. Using external devicesChapter 3. Using external devices „Inserting an ExpressCard device„Removing an ExpressCard device Connecting an external display „Connecting a VGA monitorChapter 3. Using external devices „Connecting an HDMI monitor Chapter 3. Using external devicesConnecting a headphone and audio device Chapter 3. Using external devicesChapter 3. Using external devices Listening to music at high volume over extended periods of time may damage your hearingConnecting an external microphone Chapter 3. Using external devices„Enabling Bluetooth communications Chapter 3. Using external devicesChapter 4. Troubleshooting Frequently asked questionsWhere can I find warranty information? Chapter 4. TroubleshootingWhere are the recovery discs? How can I contact the Customer Support Center?Troubleshooting „Display problemsChapter 4. Troubleshooting Chapter 4. Troubleshooting My screen goes blank while the computer is onChapter 4. Troubleshooting „A password problem„Keyboard problems I forgot my password„Sleep or hibernation problems Chapter 4. TroubleshootingThe computer enters sleep mode unexpectedly „Computer screen problems Chapter 4. TroubleshootingThe screen is blank Chapter 4. Troubleshooting The screen is unreadable or distortedIncorrect characters appear on the screen „Sound problems „Battery problemsChapter 4. Troubleshooting Chapter 4. Troubleshooting „A hard disk drive problem„A startup problem The battery does not charge„Other problems Chapter 4. TroubleshootingYour computer does not respond Chapter 5. Getting help and service Getting help and serviceCalling the Customer Support Center Chapter 5. Getting help and serviceGetting help on the Web Chapter 5. Getting help and service The following items are not coveredChapter 5. Getting help and service ƒMachine Type and ModelChapter 5. Getting help and service Getting help around the worldChapter 6. Safety, use, and care information Important safety informationChapter 6. Safety, use, and care information „Conditions that require immediate action„Safety guidelines Chapter 6. Safety, use, and care information„Service and upgrades Chapter 6. Safety, use, and care informationDanger „Power cords and power adapters Chapter 6. Safety, use, and care informationDanger Chapter 6. Safety, use, and care information terminals and/or the connector terminals on a power adapter, which can eventually result in overheating„Plugs and outlets Chapter 6. Safety, use, and care information„Extension cords and related devices Danger„Power supply statement Chapter 6. Safety, use, and care informationDanger „Lithium coin cell battery notice Chapter 6. Safety, use, and care informationDanger Chapter 6. Safety, use, and care information „Heat and product ventilationDanger Chapter 6. Safety, use, and care information ƒDo not restrict or block any ventilation openings„CD and DVD drive safety Chapter 6. Safety, use, and care informationDanger „Electrical current safety information Chapter 6. Safety, use, and care informationDanger Chapter 6. Safety, use, and care information To connect 1.Turn everything OFFChapter 6. Safety, use, and care information „Laser compliance statementDanger Chapter 6. Safety, use, and care informationWhen a CD or DVD drive is installed, note the following handling instructions DangerChapter 6. Safety, use, and care information „Liquid Crystal Display LCD notice„Be careful about where and how you work Chapter 6. Safety, use, and care informationCaring your computer Chapter 6. Safety, use, and care information ƒPlace liquids away from your computer to avoid spills, and keep your computer away from water to avoid the danger of electrical shockChapter 6. Safety, use, and care information Prevent others from touching components„Carry your computer properly Chapter 6. Safety, use, and care information„Be gentle with your computer „For outdoor use„Data safety Chapter 6. Safety, use, and care information„Handle storage media and drives properly „Take care in setting passwords Chapter 6. Safety, use, and care information„Other important tips „Cleaning the cover of your computer Chapter 6. Safety, use, and care information„Cleaning your computer keyboard Chapter 6. Safety, use, and care informationAccessibility and comfort „Cleaning your computer displayChapter 6. Safety, use, and care information Chapter 6. Safety, use, and care information „Ergonomic informationChapter 6. Safety, use, and care information General 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„What if you are traveling? MaintenanceChapter 6. Safety, use, and care information „Questions about vision?„General tips for maintenance Chapter 6. Safety, use, and care informationChapter 6. Safety, use, and care information ƒBoot into the BIOS and load the default settingsChapter 6. Safety, use, and care information hardware 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 itAppendix A. Lenovo limited warranty „What this warranty covers„How to obtain warranty service Appendix A. Lenovo limited warranty„Replacement of a product or part Appendix A. Lenovo limited warranty“Warranty Information.” Appendix A. Lenovo limited warranty „Your additional responsibilities„Use of personal information „What this warranty does not cover Appendix A. Lenovo limited warrantyAppendix A. Lenovo limited warranty „Limitation of liability„Dispute resolution Appendix A. Lenovo limited warrantyAppendix A. Lenovo limited warranty „Other rights„European Economic Area EEA Appendix A. Lenovo limited warranty „Suplemento de Garantía para MéxicoMarketed by Appendix A. Lenovo limited warrantyManufactured by China Shanghai, China CP TelWarranty Information Appendix A. Lenovo limited warranty„Types of warranty service Appendix A. Lenovo limited warranty1 Customer Replaceable Unit “CRU” service 3Courier or depot service Appendix A. Lenovo limited warranty2On-siteservice 4Customer carry-inor mail-inserviceAppendix A. Lenovo limited warranty 5Product exchange serviceLenovo warranty service telephone numbers Appendix A. Lenovo limited warrantyWarranty service telephone numbers Appendix A. Lenovo limited warranty South AfricaAppendix B. Customer Replaceable Units CRUs Size Appendix C. SpecificationsSpecifications Environment ƒ TemperatureAppendix C. Specifications Battery pack1009 Think Place - Building One Morrisville, NC Appendix D. NoticesLenovo United States, Inc U.S.A Attention Lenovo Director of LicensingAppendix D. Notices „Export classification notice „Television output noticeAppendix D. Notices Wireless related information „Wireless interoperabilityAppendix D. Notices ƒHeadset ƒPrinter Appendix D. NoticesƒFile Transfer ƒSynchronization ƒAudio Gateway ƒHuman Interface Devices Keyboard/Mouse„Usage environment and your health Appendix D. NoticesElectronic emissions notices „Federal Communications Commission FCC statementAppendix D. Notices Responsible party „German Class B compliance statement Appendix D. NoticesAppendix D. Notices Informationen in Hinsicht EMVG Paragraf 4 AbsAppendix D. Notices „Japanese VCCI Class B statement „Korea Class BAppendix D. Notices WEEE and recycling statements „General recycling statementAppendix D. Notices EU WEEE statements Appendix D. NoticesJapan recycling statements Appendix D. Notices„Disposing of a Lenovo computer components Appendix D. NoticesNotice on deleting data from your hard disk Notice for users in the U.S.AAppendix D. Notices ƒUsing the preinstalled recovery program, bring the hard disk back to factory-shipstate Appendix D. NoticesAppendix D. Notices TrademarksIndex Page Index If your product is not working correctly LENOVODO NOT RETURN IT TO THE STORE New World. New Thinking.TM Lenovo China P/N

Troubleshooting ----------------------------------------------------------------------------

Display problems

Display problems