150 TroubleshootingRestoring the Computer to an Earlier Operating StateIf problems occur after you install a device driver, use Device Driver Rollback(see "Using Windows Device Driver Rollback" on page 144) to resolve theproblem. If Device Driver Rollback does not resolve the problem, then useSystem Restore.NOTICE: Before you restore the computer to an earlier operating state, save andclose all open files and exit any open programs. Do not alter, open, or delete anyfiles or programs until the system restoration is complete.1 Click the Windows Vista Start button → Control Panel→ System andMaintenance→ Back Up and Restore Center.2 In the Tasks list, click Repair Windows using System Restore.3 Click Continue in the User Account Control (UAC) dialog box asking forpermission to run the application.4 Click Next in the System Restore window to view the most recent restorepoints in chronological order.5 Select the Show restore points older than 5 days check box to view thecomplete list of restore points.6 Select a restore point. Try to restore from the most recent restore point. Ifthis restore point fails to correct the problem, try the next oldest restorepoint until the issue is resolved. Any software installed after the selectedrestore point will need to be reinstalled.7 Click Next→ Finish.8 When prompted, click Yes.9 After System Restore finishes collecting data, the computer restarts.10 After the computer restarts, click OK.To change the restore point, you can either repeat the steps using a differentrestore point, or you can undo the restoration.If you encounter any error messages during the restore process, follow theprompts on the screen to correct the error.
