68 Quick Reference GuideScroll 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 68).Windows® XP1 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.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.If Device Driver Rollback does not resolve the problem, then use SystemRestore (see "Restoring Your Operating System" on page 61) to return yourcomputer to the operating state that existed before you installed the newdriver.Windows Vista:1 Click Start 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 enter the Device Manager.3 Right-click the device for which the new driver was installed and clickProperties.4 Click the Drivers tab→ Roll Back Driver.