Solving Problems 49Windows XP and Windows Me provide a System Restore feature that allowsyou to return your computer to an earlier operating state if changes to thecomputer’s hardware or software (including new hardware or programinstallations), or other system settings, have left the computer in anundesirable operating state. You can also undo the last System Restore.System Restore automatically creates system checkpoints every 10 hoursthat the computer remains turned on and every 24 hours of real time. Youcan also manually create your own checkpoints by creating Restore Points.To limit the amount of hard disk space used, older restore points will beautomatically purged.If your computer experiences an operating system problem, you can useSystem Restore from Safe Mode or Normal Mode to return your computerto an earlier operating state.System Restore does not cause you to lose personal files stored in the MyDocuments folder, data files, or e-mail messages after restoring thecomputer to an earlier time. If you restore the computer to a point beforeyou installed a program, the program’s data files won’t be lost, but you willhave to reinstall the actual program again.NOTICE: It is important to make regular backups of your data files. SystemRestore does not monitor changes to your data files nor does it recover yourdata files. If the original data on the hard disk is accidentally erased oroverwritten, or becomes inaccessible because of a hard disk malfunction, youwill need your backup files to recover the lost or damaged data.System Restore is enabled on your new computer. However, if you reinstallWindows XP or Windows Me with less than 200 MB of free hard-disk spaceavailable, System Restore is automatically disabled. To see if System Restoreis enabled:Windows XP1 Click the Start button, and then click Control Panel.2 Click Performance and Maintenance.3 Click System.4 Click the System Restore tab.