- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Drivers and downloads
- BIOS Setup
- Troubleshooting
- Getting help and contacting Dell
Built-in Self-Test (BIST) helps determine if the power-supply unit is working. To run self-test diagnostics on the power-supply unit of a desktop or all-in-one computer, search in the Knowledge Base Resource at Dell Support Site.