Chapter 5: Troubleshooting Your System; Troubleshooting System Startup Failure; Troubleshooting External Connections; Troubleshooting The Video Subsystem - Dell Precision Rack 7910 Owner's Manual

Safety first—for you and your system
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that came with the product.

Troubleshooting system startup failure

If you boot the system to the BIOS boot mode after installing an operating system from the UEFI Boot Manager, the system
stops responding. To avoid this issue, you must boot to the same boot mode in which you installed the operating system.
For all other startup issues, note the system messages that appear on the screen.

Troubleshooting external connections

Before troubleshooting any external devices, ensure that all external cables are securely attached to the external connectors on
your system before troubleshooting any external devices.

Troubleshooting the video subsystem

Steps
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.

Troubleshooting a USB device

About this task
Use the following steps to troubleshoot a USB keyboard/mouse. For other USB devices, go to step 7.
Steps
1. Disconnect the keyboard and mouse cables from the system and reconnect them.
2. If the problem persists, connect the keyboard/mouse to the USB port(s) on the opposite side of the system.
3. If the problem is resolved, restart the system, enter the System Setup, and check if the non-functioning USB ports are
enabled.
Check if USB 3.0 is enabled in System Setup. If enabled, disable it and see if the issue is resolved (older operating systems
may not support USB 3.0).
4. In the IDRAC Settings Utility, ensure the USB Management Port Mode is configured as Automatic or Standard OS
Use.
5. Replace the keyboard/mouse with a working keyboard/mouse.
If the problem is not resolved, proceed to the next step to begin troubleshooting other USB devices attached to the system.
Troubleshooting your system
Troubleshooting your system
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