Boot Sequence...................................................................................................................................................................39
One time boot menu.........................................................................................................................................................40
System setup options.......................................................................................................................................................40
System and setup password.......................................................................................................................................... 56
Assigning a system setup password....................................................................................................................... 56
Deleting or changing an existing system setup password.................................................................................57
Clearing BIOS (System Setup) and System passwords.....................................................................................57
Updating the BIOS in Windows................................................................................................................................57
Updating the BIOS using the USB drive in Windows..........................................................................................58
Updating the BIOS in Linux and Ubuntu................................................................................................................ 58
Updating the BIOS from the F12 One-Time boot menu.................................................................................... 58
Locate the Service Tag or Express Service Code of your Dell computer
............................................. 60
System diagnostic lights...................................................................................................................................................61
SupportAssist diagnostics................................................................................................................................................61
Built-in self-test (BIST)................................................................................................................................................... 62
System board built-in self-test (M-BIST)............................................................................................................. 62
Display panel power rail built-in self-test (L-BIST).............................................................................................62
Display panel built-in self-test (LCD-BIST)...........................................................................................................63
Outcome........................................................................................................................................................................ 63
Recovering the operating system................................................................................................................................. 64
WiFi power cycle............................................................................................................................................................... 64
Drain residual flea power (perform hard reset)......................................................................................................... 64
Backup media and recovery options.............................................................................................................................65
Real Time Clock—RTC reset......................................................................................................................................... 65
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