Dell Precision 7740 Service Manual page 5

Removing the display hinge...................................................................................................................................... 92
Installing the display hinge........................................................................................................................................ 93
Camera.................................................................................................................................................................................94
Removing the camera.................................................................................................................................................94
Installing the camera...................................................................................................................................................95
eDP cable............................................................................................................................................................................ 96
Removing the eDP cable........................................................................................................................................... 96
Installing the eDP cable..............................................................................................................................................97
Display bracket...................................................................................................................................................................98
Removing the display support bracket...................................................................................................................98
Installing the display support bracket.....................................................................................................................99
Chapter 4: BIOS setup................................................................................................................101
BIOS overview...................................................................................................................................................................101
Entering BIOS setup program....................................................................................................................................... 101
Navigation keys.................................................................................................................................................................101
One time boot menu....................................................................................................................................................... 102
System setup options..................................................................................................................................................... 102
General options.......................................................................................................................................................... 102
System configuration................................................................................................................................................ 103
Video screen options................................................................................................................................................ 105
Security........................................................................................................................................................................ 106
Secure Boot.................................................................................................................................................................107
Intel Software Guard Extensions options............................................................................................................ 108
Performance............................................................................................................................................................... 108
Power management.................................................................................................................................................. 109
Post behavior...............................................................................................................................................................110
Virtualization support................................................................................................................................................. 111
Wireless options...........................................................................................................................................................111
Maintenance................................................................................................................................................................ 112
System logs.................................................................................................................................................................. 112
Updating the BIOS........................................................................................................................................................... 112
Updating the BIOS in Windows............................................................................................................................... 112
Updating the BIOS in Linux and Ubuntu............................................................................................................... 113
Updating the BIOS using the USB drive in Windows.........................................................................................113
Updating the BIOS from the F12 One-Time boot menu....................................................................................113
System and setup password..........................................................................................................................................114
Assigning a system setup password...................................................................................................................... 114
Deleting or changing an existing system setup password................................................................................ 115
Clearing CMOS settings................................................................................................................................................. 115
Clearing BIOS (System Setup) and System passwords..........................................................................................115
Chapter 5: Troubleshooting........................................................................................................ 116
Handling swollen Lithium-ion batteries....................................................................................................................... 116
Enhanced Pre-Boot System Assessment - ePSA diagnostics............................................................................117
Running the ePSA Diagnostics................................................................................................................................ 117
Built-in self-test (BIST)...................................................................................................................................................117
M-BIST.......................................................................................................................................................................... 117
LCD Power rail test (L-BIST).................................................................................................................................. 118
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