Lenovo C540, 57315617, 57312695, 57315603, C440 Additional information resources, Tools required

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Additional information resources

If you have Internet access, the most up-to-date information for your computer is available from the World Wide Web.

You can find the following information:

•CRU removal and installation information

•Publications

•Troubleshooting information

•Parts information

•Links to other useful sources of information

To access this information, go to: http://support.lenovo.com

Tools required

To disassemble the computer, you 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 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 29

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Contents Lenovo C3/C4/C5 Series Important Safety Information Page Contents Hardware Replacement Guide Using the Computer Hardware Front view of the computer Left and right views of the computer Rear view of the computer Installing the computer stand Computer stand Connecting your computer Connecting the power cord Important information about using the computer Wired keyboard selected models only Connecting to the InternetUsing Windows Charms Bar Switching between the main Windows 8 interfacesSwitching between apps Shutting down the computerOpening other system programs Closing an appWindows Help and Support User Guide Using the Rescue System OneKey Recovery Method 1 Automatic Installation Driver and Application InstallationMethod 2 Manual Installation User Guide Troubleshooting Confirming Setup Solving Problems Troubleshooting Display ProblemsTroubleshooting Audio Problems Troubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows Bios setup utility When do I need to change the boot mode?Performing Daily Maintenance Tasks Hardware Replacement Guide Safety information for replacing CRUs OverviewAdditional information resources Tools requiredHandling static-sensitive devices General information Replacing hardwareRemoving the stand base Removing the foot cover Replacing a memory module Replacing the hard disk drive User Guide Replacing the optical drive User Guide Replacing the adapter Connect the new adapter as shown Replacing the keyboard and mouse To replace the keyboardAppendix DeclarationTrademarks Energy Star Statement 10102/4773 10103/4751 10104/6595 10105/6596 10110/6267Enabling ErP compliance mode