Dell Precision 5860 Tower Service Manual page 6

Deleting or changing an existing system setup password............................................................................... 133
Clearing BIOS (System Setup) and System passwords......................................................................................... 133
Chapter 5: Troubleshooting....................................................................................................... 134
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 134
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 134
Power-Supply Unit Built-in Self-Test ........................................................................................................................ 134
System-diagnostic lights................................................................................................................................................134
Recovering the operating system................................................................................................................................136
Real Time Clock-RTC reset........................................................................................................................................ 137
Backup media and recovery options........................................................................................................................... 137
Wi-Fi power cycle............................................................................................................................................................ 137
Chapter 6: Getting help and contacting Dell...............................................................................139
6 Contents