Dell OptiPlex 5090 Tower Service Manual page 5

Assigning a system setup password....................................................................................................................... 79
Deleting or changing an existing system setup password................................................................................. 79
Chapter 5: Troubleshooting......................................................................................................... 81
SupportAssist diagnostics................................................................................................................................................81
Diagnostic LED behavior.................................................................................................................................................. 81
Recovering the operating system................................................................................................................................. 82
Updating the BIOS in Windows......................................................................................................................................83
Updating the BIOS using the USB drive in Windows............................................................................................... 83
Backup media and recovery options.............................................................................................................................83
WiFi power cycle............................................................................................................................................................... 83
Drain residual flea power (perform hard reset)......................................................................................................... 84
Chapter 6: Getting help and contacting Dell................................................................................ 85
Contents 5