M-BIST........................................................................................................................................................................... 74
LCD Power rail test (L-BIST)................................................................................................................................... 75
LCD Built-in Self Test (BIST)................................................................................................................................... 75
System-diagnostic lights................................................................................................................................................. 75
Recovering the operating system..................................................................................................................................77
Real-Time Clock (RTC Reset)........................................................................................................................................ 77
Backup media and recovery options............................................................................................................................. 77
Wi-Fi power cycle..............................................................................................................................................................78
Drain residual flea power (perform hard reset)......................................................................................................... 78
Chapter 6: Getting help and contacting Dell................................................................................ 79
Contents 5