Network driver................................................................................................................................................................. 90Audio drivers.....................................................................................................................................................................90Storage controller drivers............................................................................................................................................... 90Other drivers.................................................................................................................................................................... 90Security device drivers..............................................................................................................................................90Software device drivers............................................................................................................................................. 91Human Interface Device drivers............................................................................................................................... 91Firmware...................................................................................................................................................................... 917 Troubleshooting........................................................................................................................................... 92Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0....................................................................92Running the ePSA Diagnostics.................................................................................................................................92Preboot blinking power button codes........................................................................................................................... 93PCIe slots..........................................................................................................................................................................958 Contacting Dell............................................................................................................................................ 966 Contents