The longer you use your computer, the more likely it is to become slower over time. By following a few simple guidelines, you can maintain your computer and keep it running smoothly.
Windows XP and Vista users can consult this straightforward article from Microsoft, which describes how to clean up and defragment your hard disk, among other tips: 5 Ways to Speed Up Your PC
Although Windows 7 was designed for faster processing, it is not immune to slowdowns. Features like special visual effects and sound effects can be disabled for faster performance. For details, check out this article: 9 Essential tips to Speed Up Windows 7