Dell M4040/14-N4050

Before You Begin 11

Disconnect all attached devices from your computer.

CAUTION: To help prevent damage to the system board, remove the main battery,

see "Removing the Battery" on page13, before working inside the computer.

Remove the battery. See "Removing the Battery" on page13.

Turn the computer top-side up, open the display, and press the power

button to ground the system board.

Contents

Main Notes, Cautions, and Warnings Contents 1 Before You Begin. . . . . . . . . . . . . . . . . . . . 9 2B a t t e r y 3 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . 15 4 Memory Module(s) . . . . . . . . . . . . . . . . . 19 6 Palm-Rest Assembly . . . . . . . . . . . . . . . 25 7 Power Button Board . . . . . . . . . . . . . . . 31 8H a r d D r i v e 9 Wireless Mini-Card . . . . . . . . . . . . . . . . 37 10 Audio Board. . . . . . . . . . . . . . . . . . . . . . 41 Page 6 17 Camera Module . . . . . . . . . . . . . . . . . . . 69 18 System Board. . . . . . . . . . . . . . . . . . . . . 73 19 Flashing the BIOS . . . . . . . . . . . . . . . . . 77 Page Page Before You Begin Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Page Page Battery Removing the Battery Replacing the Battery Keyboard Removing the Keyboard Page Replacing the Keyboard Page Memory Module(s) Removing the Memory Module(s) Replacing the Memory Module(s) Page Page Optical Drive Removing the Optical Drive Replacing the Optical Drive Palm-Rest Assembly Removing the Palm-Rest Assembly Page Page Replacing the Palm-Rest Assembly Page Page Power Button Board Removing the Power Button Board Replacing the Power Button Board Hard Drive Removing the Hard Drive Page Replacing the Hard Drive Page Wireless Mini-Card Removing the Mini-Card Replacing the Mini-Card Page Page Audio Board Removing the Audio Board Replacing the Audio Board Coin-Cell Battery Removing the Coin-Cell Battery Page Replacing the Coin-Cell Battery Page USB Board Removing the USB Board Replacing the USB Board Thermal Cooling Assembly Removing the Thermal Cooling Assembly Replacing the Thermal Cooling Assembly Processor Module (For Inspiron 14-N4050 Only) Removing the Processor Module Replacing the Processor Module Page Page Hinge Cover Removing the Hinge Cover Page Replacing the Hinge Cover Page Display Display Assembly Removing the Display Assembly Page Replacing the Display Assembly Display Bezel Removing the Display Bezel Replacing the Display Bezel Display Panel Removing the Display Panel Page Page Replacing the Display Panel Page Page Camera Module Removing the Camera Module Replacing the Camera Module Page Page System Board Removing the System Board Page Replacing the System Board Entering the Service Tag in the BIOS Flashing the BIOS