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Lenovo Y450 manual „Other problems, Troubleshooting, Your computer does not respond

Models: Y450

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Chapter 4. Troubleshooting

Other problems

Your computer does not respond.

To turn off your computer, press and hold the power button for 4 seconds or more. If the computer still does not respond, remove the AC adapter and the battery.

Your computer might lock when it enters sleep mode during a communication operation. Disable the sleep timer when you are working on the network.

The computer does not start from a device you want.

See the Boot menu of the BIOS Setup Utility. Make sure that the startup sequence in the BIOS Setup Utility is set so that the computer starts from the device you want. Also make sure that the device from which the computer starts is enabled.

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Lenovo Y450 manual „Other problems, Troubleshooting, Your computer does not respond

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. SpecificationsIndex ContentsAppendix D. Notices 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 computerY450 Chapter 2. Using your computerUsing the touchpad ChiralMotion Chapter 2. Using your computer„Gestures PinchChapter 2. Using your computer „Palm Check„Numeric keypad Using the keyboardChapter 2. Using your computer Chapter 2. Using your computer „Function key combinationsFn + PrtSc/SysRq System request Chapter 2. Using your computerIncrease/decrease computer volume Fn +„Touch inductive panel with multi-mediabuttons Chapter 2. Using your computerSpecial keys and buttons 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 computer„Removing a memory card Chapter 2. Using your computer„Inserting a memory card Chapter 2. Using your computer Using Lenovo remote specific models onlyUsing the integrated camera Chapter 2. Using your computer Using the Internet„Using RJ-45port „Using wireless LAN Chapter 2. Using your computer„Attaching a security lock optional Chapter 2. Using your computerSecuring your computer Chapter 2. Using your computer „Using VeriFace„Using passwords „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 devices„Removing an ExpressCard device Chapter 3. Using external devices„Inserting an ExpressCard device Chapter 3. Using external devices Connecting an external display„Connecting a VGA monitor „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?Chapter 4. Troubleshooting Troubleshooting„Display problems Chapter 4. Troubleshooting My screen goes blank while the computer is onChapter 4. Troubleshooting „A password problem„Keyboard problems I forgot my passwordThe computer enters sleep mode unexpectedly „Sleep or hibernation problemsChapter 4. Troubleshooting The screen is blank „Computer screen problemsChapter 4. Troubleshooting Incorrect characters appear on the screen Chapter 4. TroubleshootingThe screen is unreadable or distorted Chapter 4. Troubleshooting „Sound problems„Battery problems Chapter 4. Troubleshooting „A hard disk drive problem„A startup problem The battery does not chargeYour computer does not respond „Other problemsChapter 4. Troubleshooting Chapter 5. Getting help and service Getting help and serviceGetting help on the Web Calling the Customer Support CenterChapter 5. Getting help and service 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 informationDanger „Service and upgradesChapter 6. Safety, use, and care information Danger „Power cords and power adaptersChapter 6. Safety, use, and care information 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 DangerDanger „Power supply statementChapter 6. Safety, use, and care information Danger „Lithium coin cell battery noticeChapter 6. Safety, use, and care information Danger Chapter 6. Safety, use, and care information„Heat and product ventilation Chapter 6. Safety, use, and care information ƒDo not restrict or block any ventilation openingsDanger „CD and DVD drive safetyChapter 6. Safety, use, and care information Danger „Electrical current safety informationChapter 6. Safety, use, and care information 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 noticeCaring your computer „Be careful about where and how you workChapter 6. Safety, use, and care information 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„Handle storage media and drives properly „Data safetyChapter 6. Safety, use, and care information „Other important tips „Take care in setting passwordsChapter 6. Safety, use, and care information „Cleaning the cover of your computer Chapter 6. Safety, use, and care information„Cleaning your computer keyboard Chapter 6. Safety, use, and care informationChapter 6. Safety, use, and care information Accessibility and comfort„Cleaning your computer display 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“Warranty Information.” „Replacement of a product or partAppendix A. Lenovo limited warranty „Use of personal information Appendix A. Lenovo limited warranty„Your additional responsibilities „What this warranty does not cover Appendix A. Lenovo limited warrantyAppendix A. Lenovo limited warranty „Limitation of liability„Dispute resolution Appendix A. Lenovo limited warranty„European Economic Area EEA Appendix A. Lenovo limited warranty„Other rights 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 warranty1 Customer Replaceable Unit “CRU” service „Types of warranty serviceAppendix A. Lenovo limited warranty 3Courier or depot service Appendix A. Lenovo limited warranty2On-siteservice 4Customer carry-inor mail-inserviceAppendix A. Lenovo limited warranty 5Product exchange serviceWarranty service telephone numbers Lenovo warranty service telephone numbersAppendix A. Lenovo limited warranty Appendix A. Lenovo limited warranty South AfricaAppendix B. Customer Replaceable Units CRUs Environment ƒ Temperature Appendix C. SpecificationsSpecifications SizeAppendix 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 Appendix D. Notices „Export classification notice„Television output notice Appendix D. Notices Wireless related information„Wireless interoperability ƒHeadset ƒPrinter Appendix D. NoticesƒFile Transfer ƒSynchronization ƒAudio Gateway ƒHuman Interface Devices Keyboard/Mouse„Usage environment and your health Appendix D. NoticesAppendix D. Notices Electronic emissions notices„Federal Communications Commission FCC statement Responsible party „German Class B compliance statement Appendix D. NoticesAppendix D. Notices Informationen in Hinsicht EMVG Paragraf 4 Abs. 1Appendix D. Notices Appendix D. Notices „Japanese VCCI Class B statement„Korea Class B Appendix D. Notices WEEE and recycling statements„General recycling statement EU WEEE statements Appendix D. NoticesJapan recycling statements Appendix D. Notices„Disposing of a Lenovo computer components Appendix D. NoticesAppendix D. Notices Notice on deleting data from your hard diskNotice for users in the U.S.A ƒUsing the preinstalled recovery program, bring the hard disk back to factory-shipstate Appendix D. NoticesAppendix D. Notices TrademarksIndex Page Index DO NOT RETURN IT TO THE STORE If your product is not working correctlyLENOVO New World. New Thinking.TM Lenovo China P/N

Other problems

Your computer does not respond.

Other problems