The Windows®Functions provides direct access to the three most useful tools, making it much easier to use them regularly. These three important Windows® tools are Scandisk, Defrag, and System Restore. Important: Please note that the System Restore tool is only available in Windows® XP. In the screenshot below you see the main dialog of the Windows®Functions.
Scandisk is used to identify and correct hard drive problems caused by power failures, system crashes and switching off your PC without shutting down Windows® properly. Use the Scandisk button to start the Windows® Scandisc Tool.
Defrag finds and reorganises fragmented boot files, data files, and folders on hard disks which means if your computer seems to be getting more and more sluggish it may be because your hard disk is "fragmented". The Disk Defragmenter utility reorganizes your hard disk so that all blocks of each file are kept together, and this makes accessing them much faster. Use the Defrag button to start defragmentation of your hard drives.
The System Restore Windows® XP utility allows you to restore your computer to a previous state if a problem occurs, without losing your personal data files. This is done with backup files called "restore points". Windows® XP creates restore points automatically every day and when significant events occur (for example when you install a new program or new hardware), and you can also create restore points manually. Use the System Restore button to restore your system using the Windows® XP utility.