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Lenovo B470E For more technical support, please go to, http//consumersupport.lenovo.com, Problem

Models: B470E

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Problem	Solution

	• 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.	1. Check the settings under Boot menu of the BIOS.
	Make sure that the Boot Priority Order option starts
	from the device you want.
	2. Also make sure that the device from which the
	computer starts is enabled. Under the Boot menu,
	make sure that the device is included in the Boot
	Priority Order list.
	3. 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.

The connected external device does not work.	Make sure that:
	• Do not connect or disconnect any external device
	cables other than USB cables while the computer
	is turned on; otherwise, you might damage your
	computer.
	• When using a high power consumption external
	devices such as an external USB optical drive, use
	external device power adapter. Otherwise, the device
	may not be recognized, or the system might be turned
	off.

For more technical support, please go to

http://consumersupport.lenovo.com

Chapter 5. Troubleshooting 27

Image 41

Lenovo B470E manual For more technical support, please go to, http//consumersupport.lenovo.com, Problem, Solution

Contents

User Guide Lenovo B470e and B570eThird Edition June Copyright Lenovo Notice for users in U.S.AContents Battery recycling information for Taiwan Battery recycling information for the United StatesAppendix D. Restriction of Hazardous Substances Directive RoHSProtect yourself from the heat generated by the ac power adapter Read this firstProtect yourself from the heat that your computer generates Prevent your computer from getting wetConditions that require immediate action Important safety informationService and upgrades Safety guidelinesExtension cords and related devices Power cords and power adaptersPlugs and outlets vi User GuideExternal devices Power supply statementGeneral battery notice viii User Guide Rechargeable battery noticeLithium coin cell battery notice Heat and product ventilation Laser compliance statement Electrical current safety information3. Attach signal cables to connectors 4. Attach power cords to outlets 5. Turn devices ONLiquid crystal display LCD notice Using headphones or earphonesAdditional safety information Notice for users in the U.S.A DANGER Do not connect phone line while using tablet modeTop view Chapter 1. Getting to know your computerLeft-side view Chapter 1. Getting to know your computer Right-side viewFront view Specifications for Lenovo B470e SpecificationsBottom view Specifications for Lenovo B570e 6 User Guide Configuring the operating system Connecting to the powerChapter 2. Learning the basics First useChecking battery status Using ac power adapter and batteryCharging the battery Putting your computer into sleep state or shutting it downHandling the battery Removing the battery packUsing the keyboard Using the touchpadNumeric keypad For Lenovo B470eFor Lenovo B570e Function key combinationsUsing a flash media card not supplied Connecting external devicesConnecting a universal serial bus USB device Removing a flash media cardSystem status indicators Connecting a Bluetooth device on some modelsEnabling Bluetooth communications on your computer Special keys and buttonsAttaching a security lock not supplied Securing your computerSwitching the Graphics Processing Unit Using passwordsUsing the NVIDIA Optimus Graphics feature 16 User Guide Hardware connection Chapter 3. Connecting to the InternetWired connection Wireless connection Software configurationUsing Wi-Fi/WiMAX on some models Enabling wireless connectionChapter 3. Connecting to the Internet Software configurationAccess point not supplied Wi-Fi/WiMAX network 20 User Guide Chapter 4. Lenovo OneKey Rescue system Using Lenovo OneKey Recovery in Windows 7 operating systemUsing Lenovo OneKey Rescue system in other operating systems 22 User Guide Frequently asked questions Chapter 5. TroubleshootingDisplay problems TroubleshootingA password problem ProblemComputer screen problems Sleep or hibernation problemsSound problems ProblemA hard disk drive problem Battery problemsA startup problem OneKey Rescue system problemsSolution ProblemFor more technical support, please go to http//consumersupport.lenovo.com28 User Guide Appendix A. CRU instructions Replacing the batteryHandling a hard disk drive Replacing the hard disk drive5. Remove the frame fixing screw 32 User Guide Replacing a memory moduleRemoving the optical drive on some models 34 User Guide Appendix B. Regulatory information Wireless related informationSafety information related to Mobile Broadband Export classification noticeElectronic emissions notices German Class B compliance statement Deutschsprachiger EU Hinweis Federal Communications Commission FCC StatementIndustry Canada Class B emission compliance statement Deutschland Japan recycling statements Appendix C. WEEE and recycling statementsChina WEEE statement Important WEEE information Disposing of a disused battery pack from Lenovo notebook computers Recycling information for BrazilDisposing of Lenovo computer components Disposing of disused lithium batteries from Lenovo computersBattery recycling information for Taiwan Trademarks Battery recycling information for the European UnionBattery recycling information for the United States and Canada 42 User Guide China RoHS Turkish RoHS Appendix D. Restriction of Hazardous Substances Directive RoHSUkraine RoHS Copyright Lenovo44 User Guide India RoHSRoHS compliant as per E-Waste Management & Handling Rules