84 Troubleshooting ToolsIdentifying DriversIf you experience a problem with any device, identify whether the driver is thesource of your problem and, if necessary, update the driver.NOTE: You must be logged in with Administrator privileges to perform this procedure.Windows® XP:1 Click Start, then click Control Panel.2 Click System.3 In the System Properties window, click the Hardware tab.4 Click Device Manager.Windows Vista®:1 Click Start and right-click Computer.2 Click Propertiesp Device Manager.NOTE: The User Account Control (located to the left under Tasks window)may appear. If you are an administrator on the computer, click Continue;otherwise, contact your administrator to continue.Scroll down the list to see if any device has an exclamation point (a yellowcircle with a [!]) on the device icon.If an exclamation point is next to the device name, you may need to reinstall thedriver or install a new driver (see "Reinstalling Drivers and Utilities" on page 84).Reinstalling Drivers and UtilitiesNOTICE: The Dell Support website at support.dell.com and your Drivers andUtilities media provide approved drivers for Dell™ computers. If you install driversobtained from other sources, your computer might not work correctly.Using Windows Device Driver RollbackIf a problem occurs on your computer after you install or update a driver, useWindows Device Driver Rollback to replace the driver with the previouslyinstalled version.NOTE: You must be logged in with Administrator privileges to perform this procedure.Windows XP:1 Click Start, then click Control Panel.2 Click System.