Dell OptiPlex Small Form Factor Plus 7020 Owner's Manual page 6

Deleting or changing an existing system setup password............................................................................... 135
Clearing CMOS settings.................................................................................................................................................136
Clearing BIOS (System Setup) and System passwords.........................................................................................136
Chapter 11: Troubleshooting.......................................................................................................137
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 137
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 137
Power-Supply Unit Built-in Self-Test ........................................................................................................................ 137
System-diagnostic lights................................................................................................................................................138
Recovering the operating system................................................................................................................................138
Real Time Clock-RTC reset........................................................................................................................................139
Backup media and recovery options........................................................................................................................... 139
Wi-Fi power cycle............................................................................................................................................................ 139
Chapter 12: Getting help and contacting Dell............................................................................. 140
6 Contents