Dell PowerEdge T410 Hardware Owner's Manual - Page 158
Troubleshooting the Video Subsystem, Troubleshooting a USB Device
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Troubleshooting the Video Subsystem 1 Check the system and power connections to the monitor. 2 Check the video interface cabling from the system to the monitor. 3 Run the appropriate diagnostic test. See "Running the System Diagnostics" on page 173. If the tests run successfully, the problem is not related to video hardware. If the tests fail, see "Getting Help" on page 185 Troubleshooting a USB Device 1 Use the following steps to troubleshoot a USB keyboard and/or mouse. For other USB devices, go to step 2. a Disconnect the keyboard and mouse cables from the system briefly and reconnect them. b Connect the keyboard/mouse to the USB port(s) on the opposite side of the system. If the problem is resolved, restart the system, enter the System Setup program, and check if the nonfunctioning USB ports are enabled. c Replace the keyboard/mouse with another working keyboard/mouse. If the problem is resolved, replace the faulty keyboard/mouse. If the problem is not resolved, proceed to the next step to begin troubleshooting the other USB devices attached to the system. 2 Power down all attached USB devices and disconnect them from the system. 3 Restart the system and, if your keyboard is functioning, enter the system setup program. Verify that all USB ports are enabled. See "Integrated Devices Screen" on page 69. If your keyboard is not functioning, you can also use remote access. If the system is not accessible, see "SAS Backplane Board Connectors" on page 181 for instructions on setting the NVRAM_CLR jumper inside your system and restoring the BIOS to the default settings. 156 Troubleshooting Your System