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 3.8. Insert a known working USB key.9. Install the system cover.Next stepsIf the problem persists, see the Getting help section.Related LinksGetting helpGUID-A908B77C-1799-4484-AE42-6ABEE7756377Troubleshooting an SD cardPrerequisitesCAUTION: 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 are shipped with your product.NOTE: Certain SD cards have a physical write-protect switch on the card. If the write-protect switchis turned on, the SD card is not writable.Steps1. Enter System Setup, and ensure that the Internal SD Card Port is enabled.2. Turn off the system, including any attached peripherals, and disconnect the system from theelectrical outlet.3. Remove the system cover.NOTE: When an SD card failure occurs, the internal dual SD module controller notifies thesystem. On the next restart, the system displayed a message indicating the failure. Ifredundancy is enabled at the time of SD card failure, a critical alert will be logged and chassishealth will degrade.4. Replace the failed SD card with a new SD card.5. Install the system cover.6. Reconnect the system to its electrical outlet and turn on the system, including any attachedperipherals.7. Enter System Setup, and ensure that the Internal SD Card Port and Internal SD Card Redundancymodes are set to the needed modes.Verify that the correct SD slot is set as Primary SD Card.8. Check if the SD card is functioning properly.9. If the Internal SD Card Redundancy option is set to Enabled at the time of the SD card failure, thesystem prompts you to perform a rebuild.NOTE: The rebuild is always sourced from the primary SD card to the secondary SD card.186
