Assigning a system setup password....................................................................................................................... 74
Deleting or changing an existing system setup password................................................................................. 74
Clearing CMOS settings............................................................................................................................................ 75
Clearing BIOS (System Setup) and System passwords.....................................................................................75
Updating the BIOS............................................................................................................................................................ 75
Updating the BIOS in Windows................................................................................................................................75
Updating the BIOS using the USB drive in Windows..........................................................................................76
Updating the BIOS in Linux and Ubuntu................................................................................................................ 76
Updating the BIOS from the F12 One-Time boot menu.....................................................................................76
Chapter 5: Troubleshooting......................................................................................................... 78
Handling swollen Lithium-ion batteries........................................................................................................................ 78
Locate the Service Tag or Express Service Code of your Dell computer ..............................................78
System diagnostic lights.................................................................................................................................................. 79
SupportAssist diagnostics...............................................................................................................................................80
Built-in self-test (BIST)................................................................................................................................................... 80
M-BIST...........................................................................................................................................................................80
LCD Built-In Self-Test (BIST).................................................................................................................................. 80
Recovering the operating system.................................................................................................................................. 81
WiFi power cycle................................................................................................................................................................ 81
Drain residual flea power (perform hard reset).......................................................................................................... 81
Real Time Clock—RTC reset......................................................................................................................................... 82
Chapter 6: Getting help and contacting Dell................................................................................ 83
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