Chapter 8: Using system diagnostics.............................................................................................145Dell Embedded System Diagnostics................................................................................................................................ 145When to use the Embedded System Diagnostics....................................................................................................145Running the Embedded System Diagnostics from Boot Manager........................................................................ 145Running the Embedded System Diagnostics from the Dell Lifecycle Controller................................................. 145System diagnostics controls....................................................................................................................................... 146Chapter 9: Jumpers and connectors.............................................................................................. 147System board jumpers and connectors...........................................................................................................................147System board jumper settings..........................................................................................................................................148Disabling a forgotten password........................................................................................................................................149Chapter 10: Troubleshooting your system...................................................................................... 150Troubleshooting system startup failure.......................................................................................................................... 150Troubleshooting external connections............................................................................................................................ 150Troubleshooting the video subsystem............................................................................................................................. 151Troubleshooting a USB device..........................................................................................................................................151Troubleshooting iDRAC Direct - USB XML configuration............................................................................................ 152Troubleshooting iDRAC Direct - Laptop connection.....................................................................................................152Troubleshooting a serial input and output device.......................................................................................................... 152Troubleshooting a NIC.......................................................................................................................................................153Troubleshooting a wet system......................................................................................................................................... 153Troubleshooting a damaged system................................................................................................................................154Troubleshooting the system battery............................................................................................................................... 155Troubleshooting power supply units................................................................................................................................155Troubleshooting power source problems..................................................................................................................155Power supply unit problems........................................................................................................................................156Troubleshooting cooling problems................................................................................................................................... 156Troubleshooting cooling fans............................................................................................................................................157Troubleshooting system memory.....................................................................................................................................157Troubleshooting an internal USB key.............................................................................................................................. 158Troubleshooting a micro SD card.....................................................................................................................................158Troubleshooting an optical drive......................................................................................................................................159Troubleshooting a tape backup unit................................................................................................................................ 159Troubleshooting a drive or SSD....................................................................................................................................... 160Troubleshooting a storage controller.............................................................................................................................. 160Troubleshooting expansion cards..................................................................................................................................... 161Troubleshooting processors............................................................................................................................................. 162Chapter 11: Getting help............................................................................................................... 163Contacting Dell EMC......................................................................................................................................................... 163Accessing system information by using QRL................................................................................................................. 163Contents 7