6. Remove the system cover.7. Remove the memory risers.8. Check the memory channels and ensure that they are populated correctly.9. Reseat the memory modules in their sockets.10. Install the memory risers.11. Install the system cover.12. Reconnect the system to its electrical outlet, and turn on the system and attached peripherals.13. Enter System Setup and check the system memory setting.If the problem is not resolved, proceed with the next step.14. If a diagnostic test or error message indicates a specific memory module as faulty, swap or replacethe module with a known good memory module.15. Remove the system cover.16. Remove the memory risers.17. To troubleshoot an unspecified faulty memory module, replace the memory module in the firstDIMM socket with a module of the same type and capacity.If an error message is displayed on the screen, this may indicate a problem with the installed DIMMtype(s), incorrect DIMM installation, or defective DIMM(s). Follow the on-screen instructions toresolve the problem. For more information, see General Memory Module Installation Guidelines.18. Install the memory risers.19. Install the system cover.20. Reconnect the system to its electrical outlet, and turn on the system and attached peripherals.21. As the system boots, observe any error message that is displayed and the diagnostic indicators on thefront of the system.22. If the memory problem is still indicated, repeat step 14 through step 19 for each memory moduleinstalled.Next stepsIf the problem persists after all memory modules have been checked, see Getting Help.Troubleshooting an internal USB keyPrerequisitesCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.Steps1. Enter System Setup and ensure that the USB key port is enabled on the Integrated Devices screen.2. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.3. Remove the system cover.4. Locate the USB key and reseat it.5. Install the system cover.6. Turn on the system and attached peripherals, and check if the USB key is functioning.7. If the problem is not resolved, repeat step 2 and step 3.156
