146 Reinstalling SoftwareIn Windows XP, click Properties→ Hardware→ Device Manager.NOTE: In Windows Vista®, the User Account Control window may appear. Ifyou are an administrator on the Tablet-PC, click Continue; otherwise, contactyour 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 reinstallthe driver or install a new driver (see "Reinstalling Drivers and Utilities" onpage 146).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 Tablet-PC might not work correctly.Using Windows Device Driver RollbackIf a problem occurs on your Tablet-PC after you install or update a driver, useWindows Device Driver Rollback to replace the driver with the previouslyinstalled version.1 Click Start , and right-click Computer.In Windows XP, click Start and right-click My Computer.2 Click Properties→ Device Manager.In Windows XP, click Properties→ Hardware→ Device Manager.NOTE: In Windows Vista, the User Account Control window may appear. Ifyou are an administrator on the Tablet-PC, click Continue; otherwise, contactyour administrator to enter the Device Manager.3 Right-click the device for which the new driver was installed and clickProperties.4 Click the Driver tab→ Roll Back Driver.If Device Driver Rollback does not resolve the problem, then use SystemRestore (see "Restoring Your Operating System" on page 148) to return yourTablet-PC to the operating state that existed before you installed the newdriver.
