Built-in self-test (BIST)................................................................................................................................................... 83
M-BIST...........................................................................................................................................................................83
LCD Power rail test (L-BIST)................................................................................................................................... 84
LCD Built-in Self Test (BIST)................................................................................................................................... 84
System-diagnostic lights................................................................................................................................................. 84
Recovering the operating system................................................................................................................................. 86
Real-Time Clock (RTC Reset)........................................................................................................................................86
Backup media and recovery options............................................................................................................................. 87
Wi-Fi power cycle..............................................................................................................................................................87
Drain residual flea power (perform hard reset)......................................................................................................... 87
Chapter 6: Getting help and contacting Dell................................................................................ 88
Contents 5
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