Dell XPS 8930 Service Manual page 10

Troubleshooting.......................................................... 136
Flashing the BIOS
Flashing BIOS (USB key)
Power-supply unit Built-in Self Test (BIST)
Steps to confirm that power-supply unit is defective
Enhanced Pre-Boot System Assessment (ePSA) diagnostics
Running the ePSA diagnostics
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Diagnostics
Wi-Fi power cycle
Getting help and contacting Dell................................. 141
Self-help resources
Contacting Dell
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