Dell XPS 8940 - Page 4

Installing the graphics card...........................................................................................................................................36
Coin-cell battery.................................................................................................................................................................. 38
Removing the coin-cell battery....................................................................................................................................38
Installing the coin-cell battery...................................................................................................................................... 39
Power-supply unit............................................................................................................................................................... 40
Removing the power-supply unit.................................................................................................................................40
Installing the power-supply unit................................................................................................................................... 43
Processor fan and heat-sink assembly............................................................................................................................. 44
Removing the processor fan and heat-sink assembly.............................................................................................. 44
Installing the processor fan and heat-sink assembly.................................................................................................45
Processor..............................................................................................................................................................................46
Removing the processor...............................................................................................................................................46
Installing the processor................................................................................................................................................. 47
Voltage regulator heat sink (optional).............................................................................................................................. 48
Removing the voltage regulator heat sink..................................................................................................................48
Installing the voltage regulator heat sink.................................................................................................................... 49
System board.......................................................................................................................................................................50
Removing the system board........................................................................................................................................ 50
Installing the system board...........................................................................................................................................54
Chapter 3: Drivers and downloads.................................................................................................. 58
Chapter 4: System setup............................................................................................................... 59
System setup....................................................................................................................................................................... 59
BIOS overview..................................................................................................................................................................... 59
Entering BIOS setup program............................................................................................................................................59
Navigation keys................................................................................................................................................................... 59
Boot Sequence.................................................................................................................................................................... 59
System setup options......................................................................................................................................................... 60
System and setup password..............................................................................................................................................65
Assigning a system setup password........................................................................................................................... 65
Deleting or changing an existing system setup password........................................................................................65
Real Time Clock (RTC) reset....................................................................................................................................... 66
Clearing BIOS (System Setup) and System passwords...........................................................................................66
Chapter 5: Troubleshooting........................................................................................................... 67
SupportAssist diagnostics.................................................................................................................................................. 67
M-BIST..................................................................................................................................................................................67
System diagnostic lights..................................................................................................................................................... 67
Diagnostic error messages................................................................................................................................................. 68
Enabling Intel Optane memory............................................................................................................................................71
Disabling Intel Optane memory...........................................................................................................................................71
Recovering the operating system......................................................................................................................................72
Flashing BIOS (USB key)....................................................................................................................................................72
Flashing the BIOS................................................................................................................................................................ 72
Flashing the BIOS from the F12 One-Time boot menu...................................................................................................73
WiFi power cycle..................................................................................................................................................................73
Flea power release...............................................................................................................................................................74
4
Contents