Lenovo Y471A manual Troubleshooting Other problems

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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 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 Y471A Regulatory Notice First Edition May Copyright Lenovo Contents Page Top view Getting to know your computerPower button Wireless moduleIndicators Volume buttons Getting to know your computerUSB port RJ-45 portMicrophone jack Headphone jackUSB combo port Optical drive AC power adapterJack Kensington slot System status Bottom view Battery pack Battery latch manual„ Configuring the operating system „ Connecting to the powerLearning the basics „ Reading the manualsPutting your computer into sleep state Learning the basicsShutting down your computer „ Charging the battery „ Checking battery status„ Removing the battery pack „ Handling the batteryTouchpad button Using the touchpad„ Function key combinations „ Numeric keypadLearning the basics Inserting a memory card „ Using memory cards not suppliedRemoving a memory card „ Connecting USB devices Enabling Bluetooth communications on your computer „ Connecting a Bluetooth deviceMute/Unmute Volume down Volume up „ Volume buttons b- d„ OneKey Rescue system button a Movie mode Normal modeIntelligent mode „ OneKey Theater button eSuper silent mode Standard modeEfficient thermal dissipation mode Performing dust cleaningF g Page „ Using passwords „ Using VeriFace„ Attaching a security lock not supplied AMD Muxless ATI Switchable Graphics Technology PowerXpress Switching between Mode 1 and Mode Switchable Graphics in two modes on select models„ Software configuration Connecting to the Internet„ Hardware connection CableConnecting to the Internet „ Using Wi-Fi/WiMAXEnabling wireless connection Software configuration„ Introduction OneKey Rescue systemOneKey Rescue system „ Creating a recovery discsFrequently asked questions TroubleshootingWhen do I need to restore the system to the factory status? TroubleshootingPassword problem Display problemsKeyboard problems Computer screen problems Troubleshooting Sleep or hibernation problemsSound problems Hard disk drive problem Troubleshooting Battery problemsStartup problem OneKey Rescue system problemsTroubleshooting Other problems Appendix. CRU instructions Handling a hard disk drive Appendix. CRU instructionsAppendix. CRU instructions Appendix. CRU instructions Appendix. CRU instructions Sdram Appendix. CRU instructions Appendix. CRU instructions Removing the optical drive Trademarks Page New World. New Thinking.TM