Installing The System Fan.......................................................................................................................................29Removing The Thermal Sensor...............................................................................................................................29Installing The Front Thermal Sensor.......................................................................................................................31Removing The Power Switch..................................................................................................................................31Installing The Power Switch...................................................................................................................................33Removing The Input/Output Panel..........................................................................................................................33Installing The Input/Output Panel...........................................................................................................................35Removing The System Board..................................................................................................................................35System Board Layout..............................................................................................................................................37Installing The System Board...................................................................................................................................383 System Setup.............................................................................................................................39Boot Sequence.......................................................................................................................................................39Navigation Keys......................................................................................................................................................39System Setup Options.............................................................................................................................................40Updating the BIOS .................................................................................................................................................47Jumper Settings......................................................................................................................................................48System and Setup Password..................................................................................................................................48Assigning a System Password and Setup Password......................................................................................48Deleting or Changing an Existing System and/or Setup Password..................................................................49Disabling a System Password..........................................................................................................................494 Diagnostics.................................................................................................................................51Enhanced Pre-Boot System Assessment (ePSA) Diagnostics...............................................................................515 Troubleshooting Your Computer.............................................................................................53Power LED Diagnostics..........................................................................................................................................53Beep Code..............................................................................................................................................................54Error Messages......................................................................................................................................................546 Specifications............................................................................................................................577 Contacting Dell .........................................................................................................................65