Troubleshooting Your System 127Ensure that the cables are firmly connected to the SAS controller and thehard drives.10 Close the system. See "Closing the System" on page 47.11 Reconnect the system to its electrical outlet, and turn on the system andattached peripherals. If the problem persists, see "Getting Help" onpage 141.Troubleshooting Expansion CardsNOTE: When troubleshooting an expansion card, see the documentation for youroperating system and the expansion card.Problem• Error message indicates a problem with an expansion card.• Expansion card performs incorrectly or not at all.ActionCAUTION: 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.1 Run the appropriate online diagnostic test for the expansion card which isexhibiting issues. See "Using Dell PowerEdge Diagnostics" on page 131.Follow any recommended actions provided by the diagnostics. If theproblem persists, go to the next step.2 Open or remove the bezel. See "Removing the Bezel" on page 96.3 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.4 Open the system. See "Opening the System" on page 47.5 Ensure that each expansion card is firmly seated in its connector. See"Installing an Expansion Card" on page 73.6 Close the system. See "Closing the System" on page 47.