Installing the WLAN Card.................................................................................................................... 23Removing the WWAN Card.................................................................................................................23Installing the WWAN Card.................................................................................................................. 24Removing the Global Positioning System (GPS) Module.................................................................. 24Installing the Global Positioning System (GPS) Module.................................................................... 25Removing the Card Bracket................................................................................................................25Installing the Card Bracket..................................................................................................................27Removing the I/O Board..................................................................................................................... 27Installing the I/O Board.......................................................................................................................28Removing the Fingerprint Reader...................................................................................................... 28Installing the Fingerprint Reader........................................................................................................ 29Removing the LED Board....................................................................................................................29Installing the LED Board..................................................................................................................... 30Removing the Battery Board.............................................................................................................. 30Installing the Battery Board................................................................................................................. 31Removing the Keyboard Control Board............................................................................................. 31Installing the Keyboard Control Board...............................................................................................32Removing the Power Connector........................................................................................................33Installing the Power Connector......................................................................................................... 34Removing the Palmrest.......................................................................................................................34Installing the Palmrest.........................................................................................................................35Removing the Display Assembly.........................................................................................................36Installing the Display Assembly.......................................................................................................... 38Removing the System Board.............................................................................................................. 38Installing the System Board................................................................................................................ 403 System Setup....................................................................................................... 42Boot Sequence....................................................................................................................................42Navigation Keys................................................................................................................................... 42System Setup Options.........................................................................................................................43Updating the BIOS ..............................................................................................................................53System and Setup Password...............................................................................................................53Assigning a System Password and Setup Password.................................................................... 54Deleting or Changing an Existing System and/or Setup Password.............................................544 Diagnostics.......................................................................................................... 56Enhanced Pre-Boot System Assessment (ePSA) Diagnostics........................................................... 56Device Status Lights............................................................................................................................ 57Battery Status Lights............................................................................................................................ 575 Contacting Dell................................................................................................... 58