124 Troubleshooting Your SystemTroubleshooting Expansion CardsCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.NOTE: When troubleshooting an expansion card, see the documentation for youroperating system and the expansion card.1 Run the appropriate online diagnostic test. See "Using Online Diagnostics"on page 127.2 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.3 Open the system. See "Opening the System" on page 59.4 Ensure that each expansion card is firmly seated in its connector. See"Installing an Expansion Card" on page 84.5 Close the system. See "Closing the System" on page 60.6 If the problem is not resolved, turn off the system and attachedperipherals, and disconnect the system from the electrical outlet.7 Open the system. See "Opening the System" on page 59.8 Remove all expansion cards installed in the system. See "Removing anExpansion Card" on page 82.9 Close the system. See "Closing the System" on page 60.10 Run the appropriate online diagnostic test.If the tests fail, see "Getting Help" on page 135.11 For each expansion card you removed in step 8, perform the followingsteps:a Turn off the system and attached peripherals, and disconnect thesystem from the electrical outlet.b Open the system. See "Opening the System" on page 59.c Reinstall one of the expansion cards.d Close the system. See "Closing the System" on page 60.
