Dell XPS 13 9340 Owner's Manual page 5

Chapter 8: BIOS Setup................................................................................................................ 77
Entering BIOS setup program.........................................................................................................................................77
Navigation keys.................................................................................................................................................................. 77
F12 One Time Boot menu.................................................................................................................................................77
System setup options....................................................................................................................................................... 78
Updating the BIOS............................................................................................................................................................ 92
Updating the BIOS in Windows................................................................................................................................92
Updating the BIOS using the USB drive in Windows..........................................................................................92
Updating the BIOS in Linux and Ubuntu................................................................................................................ 93
Updating the BIOS from the F12 One Time Boot menu.....................................................................................93
System and setup password...........................................................................................................................................94
Assigning a System Setup password...................................................................................................................... 94
Deleting or changing an existing system setup password.................................................................................94
Clearing BIOS (System Setup) and System passwords.......................................................................................... 95
Chapter 9: Troubleshooting.........................................................................................................96
Handling swollen rechargeable Li-ion batteries......................................................................................................... 96
Locate the Service Tag or Express Service Code of your Dell computer ..........................................................96
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................97
Running the SupportAssist Pre-Boot System Performance Check................................................................ 97
Built-in self-test (BIST)................................................................................................................................................... 97
M-BIST........................................................................................................................................................................... 97
LCD Power rail test (L-BIST)................................................................................................................................... 98
LCD Built-in Self-Test (BIST)...................................................................................................................................98
Diagnostic error codes..................................................................................................................................................... 99
Recovering the operating system................................................................................................................................. 99
Real Time Clock-RTC reset......................................................................................................................................... 99
Backup media and recovery options........................................................................................................................... 100
Wi-Fi power cycle............................................................................................................................................................100
Drain residual flea power (perform hard reset)....................................................................................................... 100
Chapter 10: Getting help and contacting Dell............................................................................. 102
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