Lenovo U260 manual Troubleshooting Other problems

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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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Contents IdeaPad U260 Regulatory Notice If your product is not working correctlyContents Page Top view Getting to know your computerSelect models only Wireless moduleAntennas Select Models only Computer display Power button Getting to know your computerHeadphone mic Left-side viewKensington slot USB portRight-side view Fan louvers Bottom viewFirst use Learning the basicsLearning the basics „ Shutting down your computerUsing AC adapter and battery „ Checking battery status„ Charging the battery Using the touchpad Left click buttonRight click button Using the keyboard „ Numeric keypad„ Function key combinations Learning the basics Enabling Bluetooth communications on your computer Connecting external devices„ Connecting a universal serial bus USB device „ Connecting a Bluetooth device Select models only„ OneKey Rescue system button Special keys and buttonsSystem status indicators „ Attaching a security lock not supplied „ Using VeriFace„ Using passwords Securing your computer„ Hardware connection Connecting to the InternetWired connection „ Software configuration„ Using Wi-Fi/WiMAX Select models only Wireless connectionOneKey Rescue system OneKey Rescue system„ Introduction Frequently asked questions TroubleshootingPassword problem TroubleshootingTroubleshooting Display problemsTroubleshooting Sleep or hibernation problems Computer screen problemsSound problems OneKey Rescue system problems Troubleshooting Battery problemsHard disk drive problem Startup problemTroubleshooting Other problems „ What your service provider will do to correct 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 „ What this warranty does not cover „ Use of personal information„ Limitation of liability „ Dispute resolution „ Other rights„ European Economic Area EEA Product or Machine type Country or region of purchase Warranty information„ Types of warranty service Appendix A. Lenovo limited warranty Energy star information Appendix B. Product specific NoticesWindows Appendix B. Product specific Notices„ Federal Communications Commission FCC Statement Electronic emissions notices„ Industry Canada Class B Emission Compliance Statement „ Avis de conformité à la réglementation d’Industrie Canada„ German Class B Compliance Statement „ European Union Compliance Statement Class B Compliance Ports Appendix C. SpecificationsModel Name IdeaPad U260 Machine Type 20067/0876 Form Factor SystemTrademarks Index Problems

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