Clearing CMOS settings.............................................................................................................................................72
Clearing BIOS (System Setup) and System passwords.....................................................................................72
Chapter 6: Troubleshooting......................................................................................................... 73
Handling swollen Lithium-ion batteries........................................................................................................................ 73
Locate the Service Tag or Express Service Code of your Dell computer ..............................................73
System-diagnostic lights..................................................................................................................................................74
SupportAssist | On-board Diagnostics......................................................................................................................... 75
Recovering the operating system................................................................................................................................. 75
Updating the BIOS using the USB drive in Windows................................................................................................75
Updating the BIOS in Windows......................................................................................................................................76
WiFi power cycle............................................................................................................................................................... 76
Chapter 7: Getting help and contacting Dell.................................................................................77
Contents 5
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