Lenovo Z575, Z475 manual Troubleshooting Other problems, Respond

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Chapter 5. Troubleshooting

Other problems

Your computer does not	• To turn off your computer, press and hold the power button
respond.	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.

The computer does not start from a device you want.

•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.

The connected external device	• Do not connect or disconnect any external device cables
does not work.	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.

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Contents IdeaPad Z475/Z575 Regulatory Notice First Edition April Copyright Lenovo Contents Page „ Z475 Getting to know your computerTop view „ Z575 Getting to know your computerGetting to know your computer Integrated Camera Wireless module antennas Computer displaySpeakers Power button OneKey Rescue system button Thermal management buttonVGA port Left-side viewFan louvers RJ-45 portESATA/USB Getting to know your computer Combo port USB portRight-side view „ Z475 „ Z575Optical drive Getting to know your computer RJ-45 port Integrated wireless device switch Memory card slot Front viewBottom view Battery pack Learning the basics „ Connecting to the power„ Configuring the operating system „ Reading the manualsPutting your computer into sleep state „ Shutting down your computerLearning the basics „ Checking battery status „ Charging the battery„ Removing the battery pack „ Handling the batteryUsing the touchpad „ Numeric keypad Z475 Using the keyboardZ575 „ Function key combinations Learning the basics Inserting a memory card Connecting external devicesRemoving a memory card „ Connecting USB devices „ Connecting Bluetooth enabled devices on select models Enabling Bluetooth communications on your computer„ OneKey Rescue system button a „ Volume buttons b~dSpecial keys and buttons „ OneKey Theater button e Efficient thermal dissipation mode Standard modeSuper silent mode „ Thermal management button fPerforming dust cleaning System status indicators „ Attaching a security lock not supplied „ Using VeriFaceSecuring your computer „ Using passwords Connecting to the Internet Wired connectionConnecting to the Internet „ Software configuration„ Hardware connection Wireless connection Wi-Fi WiMAXSoftware configuration Hardware connection„ Introduction OneKey Rescue systemOneKey Rescue system „ Creating a recovery discs OneKey Rescue systemOneKey Rescue system Troubleshooting Frequently asked questionsWhere can I find warranty information? Troubleshooting Display problems Keyboard problems Troubleshooting Password problems Sleep or hibernation problems Computer screen problems Puter does not workHard disk drive problem Troubleshooting Sound problemsBattery problems Startup problemTroubleshooting Other problems RespondReplacing the battery pack Appendix A. CRU instructionsAppendix A. CRU instructions Replacing the hard disk drive Handling a hard disk driveZ475 Z575 Pull the tab in the direction shown by arrow d Take out the hard disk drive secured in a metal frame e Appendix A. CRU instructions Replacing memory Appendix A. CRU instructions Appendix A. CRU instructions Removing the optical drive Setup Poster User Guide Trademarks Page New World. New Thinking.TM