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Lenovo U455 manual Troubleshooting Battery problems, Hard disk drive problem, Startup problem

Models: U455

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Chapter 5. Troubleshooting

Battery problems

Your computer shuts down before the battery status indicator shows empty. -or-

Your computer operates after the battery status indicator shows empty.

The operating time for a fully charged battery is short.

The computer does not operate with a fully charged battery.

The battery does not charge.

•Discharge and recharge the battery.

•For details, see “Handling the battery” in Chapter 2.

•The surge protector in the battery might be active. Turn off the computer for one minute to reset the protector, then turn on the computer again.

•For details, see “Handling the battery” in Chapter 2.

A hard disk drive problem

The hard disk drive does	• In the Boot menu in BIOS setup utility, make sure
not work.	that the hard disk drive is included in the Boot
	Device Priority correctly.

A startup problem

The Microsoft® Windows	• Use the OneKey Rescue system to help solve or
operating system does not	identify your problem. For details on the OneKey
start.	Rescue system, see “Chapter 4. OneKey Rescue
	system” on page 39.

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Lenovo U455 manual Troubleshooting Battery problems, Hard disk drive problem, Startup problem

Contents

Lenovo IdeaPad U455 First Edition December Copyright Lenovo Dear user Explanation of hard disk capacity Page Page Contents Contents Appendix B. Use and care Appendix F. FeaturesAppendix C. Lenovo limited 120Important safety information Important safety information„ Read this first IiiImportant safety information Unpack Important safety information Working place Important safety information Correct usage procedures Important safety information ViiImportant safety information Service and upgrades ViiiGetting to know your computer Power button Getting to know your computerIntegrated CameraFingerprint TouchpadReader Left-side view Adapter jackRight-side view Bottom view Battery pack Compartment Battery latchSIM card slot Select models only Memory„ Connecting to the power Installing the battery packConnecting the computer to an electrical outlet Learning the basics„ Configuring the operating system „ Turning on the computerLearning the basics Putting your computer into sleep state„ Shutting down your computer „ Checking battery status Using AC adapter and battery„ Charging the battery „ Removing the battery pack „ Handling the battery Left click button Using the touchpadRight click button „ Gestures Pinch zoomTwo-Finger Scrolling RotatingLearning the basics Three-Finger Flick Using the keyboard „ Numeric keypad„ Function key combinations Fn + Esc Fn + F1Fn + F2 Fn + F3Connecting external devices „ Using memory cards not supplied„ Inserting a memory card „ Connecting a universal serial bus USB device„ Removing a memory card „ Connecting a Bluetooth device Select models only Enabling Bluetooth communications on your computerSwitching GPU Select models only Learning the basics Special keys and buttons Volume buttons ~ Learning the basics OneKey Rescue system buttonIndicator System status indicatorsTouchpad indicator Securing your computer „ Attaching a security lock not supplied„ Using VeriFace „ Using passwords„ Fingerprint reader Using the Internet Wired connection„ Software configuration Using the Internet„ Hardware connection CableWireless connection Wi-Fi„ Using Wi-Fi/WiMax Select models only Enabling wireless connectionSoftware configuration Hardware connection„ Using Mobile Broadband Select models only Inserting the SIM card Removing the SIM card Using the Internet OneKey Rescue system OneKey Rescue system„ Introduction OneKey Rescue system OneKey Rescue system Troubleshooting Frequently Asked QuestionsTroubleshooting Where are the recovery discs?What can I do if the backup process fails? Troubleshooting Display problemsProblems with GPU switching Computer is onKeyboard problems Troubleshooting Password problemSleep or hibernation problems Mode immediately after Troubleshooting Computer screen problems Sound problemsHard disk drive problem Troubleshooting Battery problemsStartup problem Troubleshooting OneKey Rescue system problems Other problemsConnected external To replace the battery, do the following Replacing the batteryUpgrading and replacing devices Upgrading and replacing devices Replacing the hard disk drive Handling a hard disk driveUpgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Replacing memory Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Appendix A. Getting help and service Appendix A. Getting help and service Getting help on the WebAppendix A. Getting help and service Appendix A. Getting help and service Getting help around the world Appendix B. Use and care information „ Be careful about where and how you workCaring for your computer „ Notice of static-electricity Appendix B. Use and care information„ Be gentle with your computer „ Carry your computer properly„ For outdoor use „ Handle storage media and drives properly„ Take care in setting passwords „ Data safety„ Other important tips Appendix B. Use and care information Accessibility and comfort „ Ergonomic information„ What if you are traveling? „ Questions about vision?Maintenance „ General tips for maintenanceAppendix B. Use and care information „ Cleaning the cover of your computer „ Cleaning your computer keyboard „ Cleaning your computer display Appendix C. Lenovo limited warranty „ What this warranty covers„ What your service provider will do to correct problems „ How to obtain warranty serviceAppendix C. Lenovo limited warranty Information „ Replacement of a product or part „ Your additional responsibilities „ Use of personal information„ What this warranty does not cover „ Limitation of liability „ Dispute resolution „ Other rights „ European Economic Area EEA„ Lenovo Turkey address Lenovo Technology B.V. Turkiye Istanbul SubesiWarranty information „ Types of warranty service Customer Replaceable Unit CRU ServiceCourier or Depot Service Appendix C. Lenovo limited warranty On-site ServiceCustomer Carry-In or Mail-In Service Product Exchange Service Appendix D. Customer replaceable units CRUs Appendix D. Customer replaceable units CRUs Appendix E. Notices Appendix E. Notices „ Export classification notice 100Energy Star model information 101102 Windows„ Wireless interoperability Wireless related information103 „ Usage environment and your health 104„ Safety information related to Mobile Broadband 105106 „ Federal Communications Commission FCC Statement Electronic emissions notices107 „ Industry Canada Class B Emission Compliance Statement 108„ German Class B Compliance Statement „ Avis de conformité à la réglementation d’Industrie Canada109 110 „ European Union Compliance Statement Class B Compliance 111112 „ Korea Class B „ Japan Compliance Statement for Power line Harmonics113 „ General recycling statement Weee and recycling statements114 EU Weee statements 115Japan recycling statements 116„ Disposing of a Lenovo Computer Components 117118 119 Appendix F. Features and Specifications 120Model Name IdeaPad U455 Form Factor121 Appendix F. Features and Specifications PortsOthers Trademarks 122Index 123124 Index125 Page Do not Return IT to the Store If your product is not working correctlyNew World. New Thinking.TM