Lenovo Y470, Y570 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 Y470/Y570 Regulatory Notice First Edition December Copyright Lenovo Contents Page „ Y470 Getting to know your computerAntennas Computer display Wireless module„ Y570 Getting to know your computerSystem button Getting to know your computer Power buttonIndicators Volume buttons OneKey RescueRJ-45 port USB combo port USB portMicrophone jack Getting to know your computer Headphone jack On select models Optical drive AC power adapter„ Y470 „ Y570 USB combo port TV-in jackProcessing Unit Switch on select Models Device switchGPU Graphics Bottom view Battery pack Battery latch manual „ Reading the manuals „ Connecting to the power„ Configuring the operating system Learning the basicsLearning the basics Putting your computer into sleep stateShutting down your computer „ Handling the battery „ Checking battery status„ Charging the battery „ Removing the battery packTouchpad button „ Numeric keypad Y470Y570 „ 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„ Volume buttons b- d Mute/Unmute Volume down Volume up„ OneKey Rescue system button a „ OneKey Theater button e Performing dust cleaning Standard modeSuper silent mode Efficient thermal dissipation modeSystem status indicators Page „ Using VeriFace „ Using passwords„ Attaching a security lock not supplied Enabling Nvidia Optimus on select models Enabling 3D Vision „ Using 3D Vision on your computerCable Connecting to the Internet„ Software configuration „ Hardware connectionSoftware configuration „ Using Wi-Fi/WiMAXConnecting to the Internet Enabling wireless connection„ Introduction OneKey Rescue systemFrequently asked questions TroubleshootingWhen do I need to restore the system to the factory status? TroubleshootingDisplay problems Password problemKeyboard problems Troubleshooting Sleep or hibernation problems Computer screen problemsSound problems OneKey Rescue system problems Troubleshooting Battery problemsHard disk drive problem Startup problemTroubleshooting 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