Removing the WLAN antenna module................................................................................................................... 39
Installing the WLAN antenna module......................................................................................................................39
System board..................................................................................................................................................................... 40
Removing the system board..................................................................................................................................... 40
Installing the system board....................................................................................................................................... 45
Power button with fingerprint reader assembly........................................................................................................ 48
Removing the power button with fingerprint reader assembly ...................................................................... 48
Installing the power button with fingerprint reader assembly ........................................................................ 50
Palm-rest and keyboard assembly................................................................................................................................. 51
Removing the palm-rest and keyboard assembly.................................................................................................51
Installing the palm-rest and keyboard assembly.................................................................................................. 52
Recommended tools......................................................................................................................................................... 53
Screw list.............................................................................................................................................................................53
Major components of Latitude 9440 2-in-1................................................................................................................ 54
Chapter 3: Drivers and downloads............................................................................................... 56
Chapter 4: BIOS setup.................................................................................................................57
Entering BIOS setup program........................................................................................................................................ 57
Navigation keys..................................................................................................................................................................57
One Time Boot menu........................................................................................................................................................57
System setup options.......................................................................................................................................................58
Updating the BIOS............................................................................................................................................................ 68
Updating the BIOS in Windows................................................................................................................................68
Updating the BIOS using the USB drive in Windows..........................................................................................68
Updating the BIOS from the F12 One-Time boot menu.................................................................................... 69
System and setup password...........................................................................................................................................70
Assigning a system setup password....................................................................................................................... 70
Deleting or changing an existing system setup password.................................................................................70
Clearing BIOS (System Setup) and System passwords........................................................................................... 71
Clearing Chassis Intrusion Alert...................................................................................................................................... 71
BIOS Reset..........................................................................................................................................................................73
Chapter 5: Troubleshooting......................................................................................................... 74
Handling swollen rechargeable Li-ion batteries..........................................................................................................74
Locate the Service Tag or Express Service Code of your Dell computer ..............................................74
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................75
Running the SupportAssist Pre-Boot System Performance Check................................................................75
Built-in self-test (BIST)................................................................................................................................................... 75
M-BIST........................................................................................................................................................................... 75
LCD Power rail test (L-BIST)................................................................................................................................... 76
LCD Built-in Self Test (BIST)................................................................................................................................... 76
System-diagnostic lights..................................................................................................................................................77
Recovering the operating system..................................................................................................................................78
Backup media and recovery options............................................................................................................................. 78
Wi-Fi power cycle..............................................................................................................................................................78
Drain residual flea power (perform hard reset)......................................................................................................... 78
Chapter 6: Getting help and contacting Dell................................................................................ 80
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