Dell Latitude 7220EX Service Manual page 4

System setup options.......................................................................................................................................................70
General options............................................................................................................................................................ 70
System information...................................................................................................................................................... 71
Video............................................................................................................................................................................... 73
Security.......................................................................................................................................................................... 73
Secure boot...................................................................................................................................................................74
Intel Software Guard Extensions............................................................................................................................. 75
Performance................................................................................................................................................................. 75
Power management.................................................................................................................................................... 76
POST behavior............................................................................................................................................................. 77
Manageability................................................................................................................................................................78
Virtualization support..................................................................................................................................................78
Wireless..........................................................................................................................................................................79
Maintenance screen....................................................................................................................................................79
System logs...................................................................................................................................................................80
SupportAssist System Resolution........................................................................................................................... 80
About.............................................................................................................................................................................. 80
Updating the BIOS in Windows .................................................................................................................................... 80
Updating BIOS on systems with BitLocker enabled............................................................................................ 81
Updating your system BIOS using a USB flash drive.......................................................................................... 81
Flashing the BIOS from the F12 One-Time boot menu...................................................................................... 82
System and setup password...........................................................................................................................................85
Assigning a system setup password....................................................................................................................... 85
Deleting or changing an existing system setup password.................................................................................86
Chapter 5: Software.................................................................................................................... 87
Drivers and downloads..................................................................................................................................................... 87
Chapter 6: Troubleshooting.........................................................................................................88
Handling swollen Lithium-ion batteries........................................................................................................................ 88
Enhanced Pre-Boot System Assessment (ePSA) diagnostics...............................................................................89
Running the ePSA diagnostics................................................................................................................................. 89
Built-in self-test (BIST)................................................................................................................................................... 89
M-BIST...........................................................................................................................................................................89
LCD Power rail test (L-BIST)................................................................................................................................... 90
LCD Built-in Self Test (BIST)................................................................................................................................... 90
System diagnostic lights...................................................................................................................................................91
Backup media and recovery options..............................................................................................................................91
Recovering the operating system................................................................................................................................. 92
WiFi power cycle............................................................................................................................................................... 92
Drain residual flea power (perform hard reset)......................................................................................................... 92
Chapter 7: Getting help and contacting Dell................................................................................ 94
4 Contents