Advanced Troubleshooting 435 Click Yes when a confirmation message appears.The PC Restore partition is deleted and the newly available disk space is added to the free spaceallocation on the hard drive.6 Right-click Local Disk (C) in Windows Explorer, click Properties, and verify that the additional diskspace is available as indicated by the increased value for Free Space.7 Click Finish to close the PC Restore Removal window.8 Restart the computer.Using the Operating System CDBefore You BeginIf you are considering reinstalling the Windows XP operating system to correct a problem with a newlyinstalled driver, first try using Windows XP Device Driver Rollback. See Using Windows XP Device DriverRollback If Device Driver Rollback does not resolve the problem, then use System Restore to return youroperating system to the operating state it was in before you installed the new device driver. See RestoringYour Operating SystemNOTICE: Before performing the installation, back up all data files on your primary hard drive. For conventionalhard drive configurations, the primary hard drive is the first drive detected by the computer.To reinstall Windows XP, you need the following items:• Dell™ Operating System CD• Dell ResourceCDNOTE: The ResourceCD contains drivers that were installed during assembly of the computer. Use theResourceCD to load any required drivers. Depending on the region from where you ordered your computer, orwhether you requested the CDs, the Drivers and Utilities CD and Operating System CD may not ship with yoursystem.Reinstalling Windows XPThe reinstallation process can take 1 to 2 hours to complete. After you reinstall the operating system, youmust also reinstall the device drivers, virus protection program, and other software.NOTICE: The Operating System CD provides options for reinstalling Windows XP. The options can overwrite filesand possibly affect programs installed on your hard drive. Therefore, do not reinstall Windows XP unless a Delltechnical support representative instructs you to do so.1 Save and close any open files and exit any open programs.2 Insert the Operating System CD. Click Exit if the Install Windows XP message appears.3 Restart the computer.