In the course of using your PC, you may have downloaded a lot of things such as softwares, songs, movies and others. Now these actually went left in the PC or hard disk takes up valuable space. So you need to periodically check what is in your PC. Some of the software that you downloaded is not used at all and these can be deleted. The movies that you downloaded can be burned into disks and then deleted from the PC. By doing this periodically you free up more space for the PC.

While you are saving such software, songs, movies and others in your PC you may also have saved them haphazardly. They are all over the hard disk. When you want such software, songs, movies and others it would take a longer time for your PC to locate them. So you need to defragment your hard disk so that the information stored is nicely filed.

While surfing the internet you may also unknowingly be infected by Spyware such as cookies and these hide in your hard disk. Over time you may have collected thousands of such cookies and they can slow down your PC. You need some kind of software to clean your PC from such cookies.

Your PC registry can also be clogged up by errors. Such errors over time can be in the thousands and they can also slow down your PC.