142 Troubleshooting Your System3 Ensure that the required device drivers for your controller card are installedand are configured correctly. See the operating system documentation formore information.4 Restart the system, enter the System Setup program, and verify that thecontroller is enabled and the drives appear in the System Setup program.See "Entering the System Setup Program" on page 42.If the problem persists, see "Getting Help" on page 157.5 Replace the front bezel. See "Installing the Front Bezel" on page 66.Troubleshooting a Storage ControllerNOTE: When troubleshooting a SAS or SAS RAID controller, also see thedocumentation for your operating system and the controller.1 Run the appropriate online diagnostic test. See "Using Online Diagnostics"on page 147.2 Enter the System Setup program and ensure that the SAS or PERCcontroller is enabled. See "Entering the System Setup Program" onpage 42.3 Restart the system and press the applicable key sequence to enter theconfiguration utility program.• for a SAS controller• for a PERC controllerSee the controller's documentation for information about configurationsettings.4 Check the configuration settings, make any necessary corrections,and restart the system.CAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.5 If installed, remove the front bezel. See "Removing the Front Bezel" onpage 65.