132 Reinstalling Software3 Click System.4 In the System Properties window, click the Hardware tab.5 Click Device Manager.6 Scroll down the list of devices and check for an exclamation point (a circlewith a [!]) next to the device name.If an exclamation point appears next to the device name, you may need toreinstall the driver or install a new driver (see "Reinstalling Drivers andUtilities" on page 132).Microsoft Windows Vista™1 Click the Windows Vista start button , then right-click Computer.2 Click Properties, then click Device Manager.NOTE: The User Account Control window may appear. If you are anadministrator on the computer, click Continue; otherwise, contact youradministrator to continue.3 Scroll down the list of devices and check for an exclamation point (a circlewith a [!]) next to the device name.If an exclamation point appears next to the device name, you may need toreinstall the driver or install a new driver (see "Reinstalling Drivers andUtilities" on page 132).Reinstalling Drivers and UtilitiesNOTICE: The Dell Support website at support.dell.com and your Drivers andUtilities disc provide approved drivers for your Dell computer. If you install driversobtained from other sources, your computer may not function properly.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, then click Control Panel.2 Under Pick a Category, click Performance and Maintenance.3 Click System.