Locate the Service Tag or Express Service Code of your Dell computer ...................................................................70
System-diagnostic lights.................................................................................................................................................... 70
SupportAssist diagnostics................................................................................................................................................... 71
Recovering the operating system.......................................................................................................................................71
Flashing BIOS (USB key)....................................................................................................................................................71
Flashing the BIOS...............................................................................................................................................................72
WiFi power cycle................................................................................................................................................................72
Drain residual flea power (perform hard reset)................................................................................................................ 72
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