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Lenovo U260 manual Troubleshooting Other problems

Models: U260

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Chapter 5. Troubleshooting

U260 User Guide V1.0_en.book Page 23 Monday, October 4, 2010 12:11 PM

Chapter 5. Troubleshooting

Other problems

Your computer does not respond.

The computer does not start from a device you want.

The connected external device does not work.

•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.

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

•See the Boot menu of the BIOS setup utility. Make sure that the Boot Device Priority 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. In the Boot menu in the BIOS setup utility, make sure that the device is included in the Boot Device Priority list.

•Press F12 when the Lenovo logo appears on the screen while the computer is starting up to select the device you want the computer starts from.

•Do not connect or disconnect any external device cables other than USB while the computer power is on; otherwise, you might damage your computer.

•When using a high power consumption external devices such as an external USB optical disk drive, use external device power adapter. Otherwise, the device may not be recognized, or system shut down may result.

For more technical support, please visit consumer product website

http://consumersupport.lenovo.com.

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Lenovo U260 manual Troubleshooting Other problems

Contents

New World. New Thinking.TM Read the safety notices and important tips in theIdeaPad U260 User GuideDO NOT RETURN IT TO THE STORE If your product is not working correctlyChapter 1. Getting to know your ContentsPage Top view Chapter 1. Getting to know your computerSelect models only c Wireless moduledComputer display ePower button Chapter 1. Getting to know your computera Kensington slot Left-sideviewChapter 1. Getting to know your computer a b c dUSB port AC power adapterRight-sideview Chapter 1. Getting to know your computerBottom view Chapter 1. Getting to know your computera Fan louvers Putting your computer into sleep state Chapter 2. Learning the basicsConnecting the computer to an electrical outlet First useChapter 2. Learning the basics „Shutting down your computerChapter 2. Learning the basics Using AC adapter and battery„Checking battery status „Charging the batteryLeft click button Using the touchpadChapter 2. Learning the basics TouchpadChapter 2. Learning the basics Using the keyboard„Numeric keypad „Function key combinationsTurn on/off the integrated camera Chapter 2. Learning the basicsChapter 2. Learning the basics Connecting external devices„Connecting a universal serial bus USB device „Connecting a Bluetooth device Select models onlySpecial keys and buttons „OneKey Rescue system buttonChapter 2. Learning the basics cBattery status indicator System status indicatorsaPower status indicator bHard disk drive indicator„Attaching a security lock not supplied „Using VeriFace„Using passwords Securing your computerChapter 3. Connecting to the Internet Wired connectionCable Software configuration Wireless connectionChapter 3. Connecting to the Internet Enabling wireless connectionOneKey Rescue system Chapter 4. OneKey Rescue systemFrequently asked questions Chapter 5. TroubleshootingA Password problem TroubleshootingChapter 5. Troubleshooting Display problemsSound problems Chapter 5. TroubleshootingSleep or hibernation problems Computer screen problemsOneKey Rescue system problems Chapter 5. Troubleshooting Battery problemsA hard disk drive problem A startup problemChapter 5. Troubleshooting Other problems Appendix A. Lenovo limited warranty „What this warranty covers„How to obtain warranty service „Replacement of a product or part Appendix A. Lenovo limited warranty„Your additional responsibilities „Limitation of liability „What this warranty does not coverAppendix A. Lenovo limited warranty „Use of personal information„European Economic Area EEA „Dispute resolutionAppendix A. Lenovo limited warranty „Other rightsType of warranty service Warranty informationAppendix A. Lenovo limited warranty Warranty periodAppendix A. Lenovo limited warranty „Types of warranty service5Product Exchange Service Appendix A. Lenovo limited warrantyEnergy star information Appendix B. Product specific NoticesWindows Appendix B. Product specific NoticesElectronic emissions notices „Federal Communications Commission FCC StatementAppendix B. Product specific Notices „German Class B Compliance Statement Appendix B. Product specific Notices Form Factor Appendix C. SpecificationsModel Name IdeaPad U260 Machine Type 20067/0876Trademarks Index