Dell Latitude 7220 Service Manual page 5

Updating the Dell BIOS in Linux and Ubuntu environments.....................................................................................76
Flashing the BIOS from the F12 One-Time boot menu.............................................................................................76
System and setup password.............................................................................................................................................. 79
Assigning a system setup password........................................................................................................................... 80
Deleting or changing an existing system setup password........................................................................................80
4 Troubleshooting..........................................................................................................................81
Enhanced Pre-Boot System Assessment (ePSA) diagnostics.......................................................................................81
Running the ePSA diagnostics......................................................................................................................................81
System diagnostic lights......................................................................................................................................................81
Recovering the operating system..................................................................................................................................... 82
WiFi power cycle................................................................................................................................................................. 83
5 Getting help...............................................................................................................................84
Contacting Dell.................................................................................................................................................................... 84
Contents 5