Boot Sequence....................................................................................................................................................... 63Navigation Keys......................................................................................................................................................63System Setup Options.............................................................................................................................................64Updating the BIOS ................................................................................................................................................. 72System and Setup Password..................................................................................................................................72Assigning a System Password and Setup Password...................................................................................... 72Deleting or Changing an Existing System and/or Setup Password..................................................................735 Diagnostics.................................................................................................................................75Enhanced Pre-Boot System Assessment (ePSA) Diagnostics...............................................................................756 Troubleshooting Your Computer.............................................................................................77Device Status Lights............................................................................................................................................... 77Battery Status Lights.............................................................................................................................................. 787 Technical Specifications......................................................................................................... 798 Contacting Dell ......................................................................................................................... 87