176 Troubleshooting Your SystemTroubleshooting an Internal USB KeyProblem• System cannot read data from a USB memory key.ActionCAUTION: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. Before performing anyprocedure, see your Product Information Guide for complete information aboutsafety precautions, working inside the system and protecting against electrostaticdischarge.1 Enter the System Setup program and ensure that the USB key port isenabled. See "Entering the System Setup Program" on page 43.2 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.3 Open the system. See "Opening the System" on page 68.4 Remove the expansion card shroud. See "Removing the Expansion CardShroud" on page 72.5 Reseat the USB key.6 Install the expansion card shroud. See "Installing the Expansion CardShroud" on page 75.7 Close the system. See "Closing the System" on page 70.8 Reconnect the system to the electrical outlet, and turn on the system andattached peripherals.If the problem is not resolved, proceed to the next step.9 Repeat step 2, step 3, and step 4.10 Insert a different USB key that you know works properly.11 Install the expansion card shroud. See "Installing the Expansion CardShroud" on page 75.12 Close the system. See "Closing the System" on page 70.13 Reconnect the system to the electrical outlet, and turn on the system andattached peripherals.If the problem is not resolved, see "Getting Help" on page 205.