Back to Contents PageSystem BoardDell Inspiron M5040/15-N5040/15-N5050 Owner's ManualRemoving the System BoardReplacing the System BoardEntering the Service Tag in the BIOSRemoving the System Board1. Follow the instructions in Before You Begin.2. Press and eject any installed cards from the 3-in-1 media card reader.3. Remove the battery. See Removing the Battery.4. Remove the keyboard. See Removing the Keyboard.5. Remove the memory module(s). See Removing the Memory Module(s).6. Remove the optical drive. See Removing the Optical Drive.7. Follow the instructions from step 3 to step 8 in Removing the Palm-Rest Assembly.8. Follow the instructions from step 5 to step 6 in Removing the Hard Drive.9. Remove the thermal cooling assembly. See Removing the Thermal Cooling Assembly.10. Remove the processor. See Removing the Processor Module.11. Remove the Mini-Card. See Removing the Mini-Card.12. Disconnect the speakers cable, USB-board cable, microphone cable, and AC-adapter cable from the connectors on the system board.WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety bestpractices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell isnot covered by your warranty.CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metalsurface (such as a connector on your computer).CAUTION: To help prevent damage to the system board, remove the main battery, see Removing the Battery, before working inside the computer.CAUTION: Handle components and cards by their edges, and avoid touching pins and contacts.1 speakers cable 2 USB-board cable3 microphone cable 4 AC-adapter cable