One time boot menu.........................................................................................................................................................84
System setup options.......................................................................................................................................................84
System and setup password.........................................................................................................................................100
Assigning a system setup password..................................................................................................................... 100
Deleting or changing an existing system setup password................................................................................101
Clearing BIOS (System Setup) and System passwords....................................................................................101
Updating the BIOS........................................................................................................................................................... 101
Updating the BIOS in Windows...............................................................................................................................101
Updating the BIOS using the USB drive in Windows.........................................................................................101
Updating the BIOS in Linux and Ubuntu.............................................................................................................. 102
Updating the BIOS from the F12 One Time Boot menu................................................................................... 102
Chapter 5: Troubleshooting....................................................................................................... 103
Handling swollen rechargeable Li-ion batteries........................................................................................................103
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 103
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 104
Built-in self-test (BIST)..................................................................................................................................................104
M-BIST......................................................................................................................................................................... 104
LCD Power rail test (L-BIST)................................................................................................................................. 105
LCD Built-in Self Test (BIST)................................................................................................................................. 105
System-diagnostic lights................................................................................................................................................105
Diagnostic error messages............................................................................................................................................ 107
System error messages...................................................................................................................................................110
Recovering the operating system................................................................................................................................ 110
Real-Time Clock (RTC Reset)........................................................................................................................................111
Updating the BIOS in Windows......................................................................................................................................111
Backup media and recovery options.............................................................................................................................111
Wi-Fi power cycle..............................................................................................................................................................111
Drain residual flea power (perform hard reset)........................................................................................................ 112
Chapter 6: Getting help and contacting Dell............................................................................... 113
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