Troubleshooting Your System 15911 Close the system. See "Closing the System" on page 83.12 Reconnect the system to its electrical outlet, and turn on the system andattached peripherals.If the problem persists, see "Getting Help" on page 167.Troubleshooting Expansion CardsNOTE: When troubleshooting an expansion card, see the documentation for youroperating system and the expansion card.WARNING: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. Before you begin thisprocedure, review the safety instructions that came with the system.1 Run the appropriate online diagnostic test. See "Using Dell™ Diagnostics"on page 163.2 If installed, remove the optional front bezel. See "Removing and Replacingthe Optional Front Bezel" on page 81.3 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.4 Open the system. See "Opening the System" on page 82.5 Ensure that each expansion card is firmly seated in its connector.See "Installing an Expansion Card" on page 97.6 Close the system. See "Closing the System" on page 83.7 Reconnect the system to the electrical outlet, and turn on the system andattached peripherals.8 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.9 Open the system. See "Opening the System" on page 82.10 Remove all expansion cards installed in the system. See "Removing anExpansion Card" on page 99.11 Close the system. See "Closing the System" on page 83.12 Reconnect the system to the electrical outlet, and turn on the system andattached peripherals.
