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Lenovo V470, B470 manual Troubleshooting Other problems

Models: B470 V470

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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 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.

•See the Boot menu of the BIOS setup utility. Make sure that the Boot Priority Order 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 Priority Order 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 V470, B470 manual Troubleshooting Other problems

Contents

Lenovo V470/V570/ B470/B570 Regulatory Notice Contents Page Top view Getting to know your computerGetting to know your computer „ B470 „ B570 Built-in microphone Touchpad Getting to know your computer „ V570/B570 „ V470/B470USB port „ V470/B470 „ V570/B570 Right-side viewDevice switch Select your computer GPU Graphics Processing Unit switch Select models onlyMemory card slot Bottom view SIM card slot Select models only „ Reading the manuals „ Conncting to the power„ Configuring the operating system Learning the basicsShutting down your computer Learning the basics„ Handling the battery „ Checking battery status„ Charging the battery „ Removing the battery packRight click button Left click buttonV470/B470 „ Numeric keypadV570/B570 „ Function key combinations Learning the basics Removing a memory card „ Using memory cards not supplied„ Connecting a universal serial bus USB device Inserting a memory cardEnabling Bluetooth communications on your computer „ Connecting a Bluetooth device Select models onlyTo change the GPU, do the following Switching GPU Select models only„ OneKey Rescue system button Special keys and buttonsV470 B470 V570 B570 Page „ Active Protection System APS V470/V570 Select models only „ Using passwords„ Attaching a security lock not supplied „ Fingerprint reader Select models onlyCable Connecting to the Internet„ Software configuration „ Hardware connectionSoftware configuration „ Using Wi-Fi/WiMAX Select models onlyConnecting to the Internet Enabling wireless connection„ Using Mobile Broadband Select models only Connecting to the Internet Inserting the SIM card V570 Connecting to the Internet Removing the SIM card „ Introduction OneKey Rescue systemFrequently asked questions TroubleshootingWhen do I need to restore the system to the factory status? TroubleshootingPassword problem Display problemsComputer screen problems Troubleshooting Sleep or hibernation problemsSound problems OneKey Rescue system problems Troubleshooting Battery problemsHard disk drive problem Startup problemTroubleshooting Other problems Appendix A. CRU instructions Replacing the batteryHandling a hard disk drive Appendix A. CRU instructionsAppendix A. CRU instructions Appendix A. CRU instructions Appendix A. CRU instructions Sdram Appendix A. CRU instructions Appendix A. CRU instructions Removing the optical drive only for V470/B470 „ What your service provider will do to correct problems Appendix B. Lenovo limited warranty„ What this warranty covers „ How to obtain warranty serviceAppendix B. Lenovo limited warranty „ Replacement of a product or part„ Your additional responsibilities „ Use of personal information „ What this warranty does not cover„ Limitation of liability „ Other rights „ Dispute resolution„ European Economic Area EEA Product or Machine type Country or region of purchase „ Types of warranty service Appendix B. Lenovo limited warranty Energy star information Appendix C. Product specific noticesWindows Appendix C. Product specific notices„ Federal Communications Commission FCC Statement Electronic emissions notices„ Avis de conformité à la réglementation d’Industrie Canada „ Industry Canada Class B Emission Compliance Statement„ German Class B Compliance Statement „ European Union Compliance Statement Class B Compliance Others Appendix D. SpecificationsSystem PortsTrademarks Index ProblemsPage If your product is not working correctly Do not Return IT to the StoreNew World. New Thinking.TM