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Lenovo 10120/90A0 [K450 NON-ES], 10121/90A1 [K450 ES] Power Control Switch selected models only

Models: 10120/90A0 [K450 NON-ES] 10121/90A1 [K450 ES] 10089/1168/4744 [K410] 10086/3109/4743 [K430] 10090/2556/4748 [K415]

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Power Control Switch (selected models only)

•After removing the hard disk, be careful not to damage it.

•In the Rescue System program, the hot-swappable hard disk can not be recognised.

Power Control Switch (selected models only)

The Power Control Switch feature allows your computer to switch to different modes, thus providing you with customized experiences during operations.

Operation of the Power Control Switch

The Power Control Switch function supports three operating modes: Auto, Turbo and Cool. You can optimize system resources by toggling between those three different modes. Different modes are used for different applications. In Auto and Cool mode, computer will boot up quickly; in Turbo mode, computer will boot up very quickly.

•Switch to a different mode by toggling the power control switch.

16User Guide

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Lenovo 10120/90A0 [K450 NON-ES], 10121/90A1 [K450 ES], 10086/3109/4743 [K430] Power Control Switch selected models only

Contents

IdeaCentre K4 Series User Guide31503699 Important Safety Information Page Important Safety Information ContentsUsing Windows Using the Rescue SystemHardware Replacement Guide Using the SoftwareAppendix Troubleshooting and Confirming SetupUsing the Computer Hardware This chapter contains the following topicsUser Guide Front view of the chassis IdeaCentre K450 Rear view of the chassis4 User Guide IdeaCentre K410 6 User Guide Use this connector to attach a microphone to your Basic connector instructionscomputer when you want to record sound or if you Use this connector to attach headphones to yourConnecting your computer The configurations are as followings 5.1 Audio configuration instructionsSound configuration is as follows 7.1 Audio configuration instructionsConnecting the power cord Connecting to the Internet Display connecting instructions when playing Blu-ray DiscsWired keyboard selected models only Using the hot-swappable hard disk Hot-swappable hard disk selected models onlyComponents Hot-swappable hard diskDo not install the operating system on the hot-swappable hard disk Power Control Switch selected models only To display the main screen of the software AUTO COOL18 User Guide TURBO 20 User Guide This chapter contains the following topics Using WindowsThe Charms Bar Switching between the main Windows 8 interfacesShutting down the computer 22 User GuideClosing an app Switching between appsOpening other system programs Windows Help and Support24 User Guide This chapter contains the following topics Using the Rescue SystemOneKey Recovery Note about the service partitionDriver and Application Installation Method 1 Automatic InstallationMethod 2 Manual Installation 28 User Guide Using the Software This chapter contains the following topicUser Guide Lenovo Support Service and WarrantyRegistration User Guide Troubleshooting and Problem Resolution Troubleshooting and Confirming SetupThis chapter contains the following topic User GuideTroubleshooting Display Problems Solving ProblemsTroubleshooting Audio Problems Troubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks34 User Guide Special considerations for troubleshooting Windows BIOS setup utility Windows Help and Support36 User Guide Performing Daily Maintenance Tasks 38 User Guide This chapter contains the following topics Hardware Replacement Guide Identifying internal components  Removing the front bezelOverview Safety information for replacing CRUsTools required Additional information resourcesHandling static-sensitive devices Identifying internal components LocationsHard disk drive User GuideLenovo K450 Identifying parts on the system boardLenovo K430 Front panel connector Battery46 User Guide Lenovo K410Lenovo K415 Pre-disassembly instructions Replacing hardwareGeneral information To remove the computer cover Removing the computer coverTo remove the front bezel Removing the front bezelTo replace a memory module Replacing a memory moduleSlot four Lenovo K415Slot one or three Slots one and two, three and four or one and threeTo replace a hard disk drive Replacing a hard disk driveTo replace an optical drive Replacing an optical driveTo replace a graphics card Replacing a graphics card56 User Guide c. Remove the screw that secures the graphics card to the chassisb. Remove the screw that secures the graphics card to the chassis To replace the TV-Tuner card Replacing the TV-Tuner card7. Reattach the computer cover To replace the keyboard Replacing the keyboard and mouseDeclaration AppendixTrademarks Energy Star Statement Enabling ErP compliance mode