Dell Inspiron 16 Plus 7640 Owner's Manual page 6

LCD Power rail test (L-BIST)................................................................................................................................. 109
LCD Built-in Self-Test (BIST).................................................................................................................................109
System-diagnostic lights................................................................................................................................................ 110
Recovering the operating system................................................................................................................................. 111
Real-Time Clock (RTC Reset)........................................................................................................................................111
Backup media and recovery options.............................................................................................................................111
Wi-Fi power cycle..............................................................................................................................................................111
Drain residual flea power (perform hard reset)........................................................................................................ 112
Chapter 10: Getting help and contacting Dell.............................................................................. 113
6 Contents