54 Reinstalling SoftwareWindows Vista:1 Click Start .2 In the Start Search box, type System Restore and press .3 Click Undo my last restoration and click Next.Windows XP:1 Click Start→ All Programs→ Accessories→ System Tools→ SystemRestore.2 Click Undo my last restoration and click Next.Enabling System RestoreNOTE: Windows Vista does not disable System Restore; regardless of low diskspace. Therefore, the steps below apply only to Windows XP.If you reinstall Windows XP with less than 200 MB of free hard-disk spaceavailable, System Restore is automatically disabled.To see if System Restore is enabled:1 Click Start→ Control Panel→ Performance and Maintenance→ System.2 Click the System Restore tab and ensure that Turn off System Restore isunchecked.Using Dell™ Factory Image RestoreNOTICE: Using Dell Factory Image Restore permanently deletes all data on thehard drive and removes any programs or drivers installed after you received yourcomputer. If possible, back up the data before using this option. Use Dell FactoryImage Restore only if System Restore did not resolve your operating systemproblem.NOTE: Dell Factory Image Restore may not be available in certain countries or oncertain computers.Use Dell Factory Image Restore (Windows Vista) only as the last method torestore your operating system. This option restores your hard drive to theoperating state it was in when you purchased the computer. Any programs orfiles added since you received your computer—including data files—arepermanently deleted from the hard drive. Data files include documents,spreadsheets, e-mail messages, digital photos, music files, and so on. Ifpossible, back up all data before using Dell Factory Image Restore.