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Lenovo 10120/90A0 [K450 NON-ES] manual Additional information resources, Tools required

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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Additional information resources

The most up-to-date information for your computer is available online at: http://support.lenovo.com.

You can find the following information:

•Customer replacement unit removal and installation information

•Publications

•Troubleshooting information

•Parts information

•Links to other useful sources of information

Tools required

To disassemble the computer, you will need the following tools:

•Wrist grounding strap and conductive mat for preventing electrostatic discharge

•Flat screwdriver

•Phillips screwdriver

•Hex screwdriver

•Plastic flat screwdriver

•Plastic tweezers

Note: The screws used for the different components vary in size. During the disassembly procedure, group the screws with their corresponding components to avoid a mismatch when replacing the components.

User Guide 41

Image 46

Lenovo 10120/90A0 [K450 NON-ES], 10121/90A1 [K450 ES] manual Additional information resources, Tools required

Contents

User Guide IdeaCentre K4 Series31503699 Important Safety Information Page Using Windows ContentsImportant Safety Information Using the Rescue SystemAppendix Using the SoftwareHardware Replacement Guide Troubleshooting and Confirming SetupThis chapter contains the following topics Using the Computer HardwareUser Guide Front view of the chassis Rear view of the chassis IdeaCentre K4504 User Guide IdeaCentre K410 6 User Guide computer when you want to record sound or if you Basic connector instructionsUse this connector to attach a microphone to your Use this connector to attach headphones to yourConnecting your computer 5.1 Audio configuration instructions The configurations are as followings7.1 Audio configuration instructions Sound configuration is as followsConnecting the power cord Display connecting instructions when playing Blu-ray Discs Connecting to the InternetWired keyboard selected models only Components Hot-swappable hard disk selected models onlyUsing the hot-swappable hard disk 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 COOL AUTO18 User Guide TURBO 20 User Guide Using Windows This chapter contains the following topicsShutting down the computer Switching between the main Windows 8 interfacesThe Charms Bar 22 User GuideOpening other system programs Switching between appsClosing an app Windows Help and Support24 User Guide Using the Rescue System This chapter contains the following topicsNote about the service partition OneKey RecoveryMethod 1 Automatic Installation Driver and Application InstallationMethod 2 Manual Installation 28 User Guide This chapter contains the following topic Using the SoftwareUser Guide Registration Service and WarrantyLenovo Support User GuideThis chapter contains the following topic Troubleshooting and Confirming Setup Troubleshooting and Problem Resolution User GuideSolving Problems Troubleshooting Display ProblemsTroubleshooting Audio Problems Troubleshooting Problems with Optical Drives and Hard Disks Troubleshooting Software Problems34 User Guide Special considerations for troubleshooting Windows Windows Help and Support BIOS setup utility36 User Guide Performing Daily Maintenance Tasks 38 User Guide  Identifying internal components Hardware Replacement GuideThis chapter contains the following topics  Removing the front bezelSafety information for replacing CRUs OverviewAdditional information resources Tools requiredHandling static-sensitive devices Hard disk drive LocationsIdentifying internal components User GuideIdentifying parts on the system board Lenovo K450Front panel connector Battery Lenovo K430Lenovo K410 46 User GuideLenovo K415 Replacing hardware Pre-disassembly instructionsGeneral information Removing the computer cover To remove the computer coverRemoving the front bezel To remove the front bezelReplacing a memory module To replace a memory moduleSlot one or three Lenovo K415Slot four Slots one and two, three and four or one and threeReplacing a hard disk drive To replace a hard disk driveReplacing an optical drive To replace an optical driveReplacing a graphics card To replace a graphics cardc. Remove the screw that secures the graphics card to the chassis 56 User Guideb. Remove the screw that secures the graphics card to the chassis Replacing the TV-Tuner card To replace the TV-Tuner card7. Reattach the computer cover Replacing the keyboard and mouse To replace the keyboardAppendix DeclarationTrademarks Energy Star Statement Enabling ErP compliance mode