144 TroubleshootingWindows XP:1 Click Start→ Control Panel.2 Under Pick a Category, click Performance and Maintenance, and clickSystem.3 In the System Properties window, click the Hardware tab, and click DeviceManager.Windows Vista:1 Click the Windows Vista Start button and right-click Computer.2 Click Properties→ Device Manager.NOTE: The User Account Control window may appear. If you are anadministrator on the computer, click Continue; otherwise, contact youradministrator 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 reinstallthe driver or install a new driver (see "Reinstalling Drivers and Utilities" onpage 144).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.Windows XP:1 Click Start→ My Computer→ Properties→ Hardware→ Device Manager.2 Right-click the device for which the new driver was installed and clickProperties.3 Click the Drivers tab→ Roll Back Driver.
