Locate the Service Tag or Express Service Code of your Dell computer
..............................................83
System board built-in self-test (M-BIST)............................................................................................................. 84
Display panel power rail built-in self-test (L-BIST)............................................................................................. 84
Display panel built-in self-test (LCD-BIST)...........................................................................................................85
Outcome........................................................................................................................................................................ 85
Recovering the operating system................................................................................................................................. 86
System diagnostic lights..................................................................................................................................................86
Enabling Intel Optane memory....................................................................................................................................... 87
Disabling Intel Optane memory...................................................................................................................................... 87
Drain residual flea power (perform hard reset)......................................................................................................... 88
WiFi power cycle............................................................................................................................................................... 88
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