Updating the BIOS.......................................................................................................................................................... 125
Updating the BIOS in Windows.............................................................................................................................. 125
Updating the BIOS in Linux and Ubuntu.............................................................................................................. 126
Updating the BIOS using the USB drive in Windows........................................................................................ 126
Updating the BIOS from the F12 One-Time boot menu................................................................................... 127
System and setup password......................................................................................................................................... 127
Assigning a System Setup password.................................................................................................................... 128
Deleting or changing an existing system setup password............................................................................... 128
Clearing CMOS settings.................................................................................................................................................129
Clearing BIOS (System Setup) and System passwords.........................................................................................129
Chapter 10: Troubleshooting...................................................................................................... 130
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 130
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 130
Power-Supply Unit Built-in Self-Test ........................................................................................................................ 130
System-diagnostic lights.................................................................................................................................................131
Recovering the operating system.................................................................................................................................131
Real Time Clock—RTC reset.........................................................................................................................................131
Backup media and recovery options........................................................................................................................... 132
Wi-Fi power cycle............................................................................................................................................................ 132
Chapter 11: Getting help and contacting Dell.............................................................................. 133
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Contents