Dell Precision 7760 Service Manual page 6

Chapter 5: Troubleshooting....................................................................................................... 130
Built-in self-test (BIST)..................................................................................................................................................130
M-BIST......................................................................................................................................................................... 130
M-BIST.......................................................................................................................................................................... 131
LCD Power rail test (L-BIST).................................................................................................................................. 131
LCD Built-in Self Test (BIST).................................................................................................................................. 131
LCD Built-in Self Test (BIST)..................................................................................................................................132
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 132
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 132
System-diagnostic lights................................................................................................................................................133
Recovering the operating system................................................................................................................................134
Backup media and recovery options........................................................................................................................... 135
Real Time Clock-RTC reset........................................................................................................................................135
WiFi power cycle..............................................................................................................................................................135
Drain residual flea power (perform hard reset)........................................................................................................136
Chapter 6: Getting help and contacting Dell............................................................................... 137
6 Contents