Advanced Troubleshooting 415 Click Next.The Restoration Complete screen appears after System Restore finishes collecting data and then thecomputer restarts.6 After the computer restarts, click OK.To change the restore point, you can either repeat the steps using a different restore point, or you canundo the restoration.Undoing the Last System RestoreNOTICE: Before you undo the last system restore, save and close all open files and exit any open programs. Do notalter, open, or delete any files or programs until the system restoration is complete.1 Click the Start button, point to All Programs→ Accessories→ System Tools, and then click SystemRestore.2 Click Undo my last restoration and click Next.Enabling System RestoreIf you reinstall Windows XP with less than 200 MB of free hard-disk space available, System Restore isautomatically disabled. To see if System Restore is enabled:1 Click the Start button and click Control Panel.2 Click Performance and Maintenance.3 Click System.4 Click the System Restore tab.Ensure that Turn off System Restore is unchecked.Using Dell PC Restore by SymantecNOTICE: Using Dell PC Restore permanently deletes all data on the hard drive and removes any applications ordrivers installed after you received your computer. If possible, back up the data before using PC Restore. Use PCRestore only if System Restore did not resolve your operating system problem.NOTE: Dell PC Restore by Symantec is not available in all countries or on all computers.Use Dell PC Restore by Symantec only as the last method to restore your operating system.PC Restore restores your hard drive to the operating state it was in when you purchased the computer.Any programs or files added since you received your computer—including data files—are permanentlydeleted from the hard drive. Data files include documents, spreadsheets, e-mail messages, digital photos,music files, and so on. If possible, back up all data before using PC Restore.To use PC Restore:1 Turn on the computer.During the boot process, a blue bar with www.dell.com appears at the top of the screen.