Dell Precision 3540 Service Manual page 6

LCD Built-in Self Test (BIST).................................................................................................................................. 131
System-diagnostic lights................................................................................................................................................132
LED Indicators and Characteristics............................................................................................................................. 132
Real-Time Clock (RTC Reset)...................................................................................................................................... 132
Recovering the operating system................................................................................................................................133
Backup media and recovery options........................................................................................................................... 133
WiFi power cycle..............................................................................................................................................................133
Drain residual flea power (perform hard reset)........................................................................................................133
Chapter 8: Getting help............................................................................................................. 135
Contacting Dell.................................................................................................................................................................135
6 Contents