Dell Precision 7520 Owner's Manual page 6

Entering BIOS setup program........................................................................................................................................ 64
Navigation keys..................................................................................................................................................................64
One time boot menu.........................................................................................................................................................65
System setup options.......................................................................................................................................................65
General screen options.............................................................................................................................................. 65
System Configuration screen options.................................................................................................................... 66
Video screen options.................................................................................................................................................. 68
Security screen options............................................................................................................................................. 68
Secure Boot screen options......................................................................................................................................70
Intel Software Guard Extensions screen options.................................................................................................70
Performance screen options.....................................................................................................................................70
Power Management screen options........................................................................................................................ 71
POST Behavior screen options................................................................................................................................ 72
Manageability screen options................................................................................................................................... 73
Virtualization support screen options..................................................................................................................... 73
Wireless screen options............................................................................................................................................. 73
Maintenance screen options..................................................................................................................................... 74
System Log screen options....................................................................................................................................... 74
Updating the BIOS............................................................................................................................................................ 74
Updating the BIOS in Windows................................................................................................................................ 74
Updating the BIOS in Linux and Ubuntu................................................................................................................ 75
Updating the BIOS using the USB drive in Windows..........................................................................................75
Updating the BIOS from the F12 One-Time boot menu.....................................................................................75
System and setup password...........................................................................................................................................76
Assigning a system setup password....................................................................................................................... 76
Deleting or changing an existing system setup password................................................................................. 77
Clearing CMOS settings...................................................................................................................................................77
Clearing BIOS (System Setup) and System passwords...........................................................................................77
Chapter 6: Troubleshooting......................................................................................................... 78
Handling swollen Lithium-ion batteries........................................................................................................................ 78
Enhanced Pre-Boot System Assessment - ePSA diagnostics.............................................................................79
Running the ePSA Diagnostics................................................................................................................................. 79
Testing memory using ePSA........................................................................................................................................... 79
Built-in self-test (BIST)................................................................................................................................................... 80
M-BIST...........................................................................................................................................................................80
LCD Power rail test (L-BIST)................................................................................................................................... 80
LCD Built-in Self Test (BIST)................................................................................................................................... 80
Diagnostic LED....................................................................................................................................................................81
Battery status lights......................................................................................................................................................... 82
Recovering the operating system................................................................................................................................. 82
Real Time Clock reset...................................................................................................................................................... 82
Backup media and recovery options.............................................................................................................................83
WiFi power cycle............................................................................................................................................................... 83
Drain residual flea power (perform hard reset)......................................................................................................... 83
Chapter 7: Contacting Dell.......................................................................................................... 84
6 Contents