Why do you think computers don't run as it used to as you continue to use them? Below are possible reasons:

Most of us use computers and we download a lot of files and store it somewhere in our hard drives. This is happening almost all the time. For instance, if we try to open an attachment in our emails and then just close it after viewing it without saving, that file will remain in the temporary directory in computer.

There are times when we just save something and then forget about it afterwards. Files received from instant messaging services usually end up in completely different directories. This happens all the time and then your system will be filled with unnecessary files that will affect the performance of your computer. If you don't want this to happen then make sure that you take note of files you download and make sure that you know where you saved them.

These files sometimes known as temporary files are saved in your system. For instance, if you save files incompletely or if you uninstall programs or you cancel the installation, those files will remain your computer and your hard drive will be cluttered with unnecessary files. When you try to open your hard drive, you will end up with results of thousands of files with strange file names.

To make matters worse, some of these files can't even be located unless you really understand how to find them. Getting these files off your hard drive is not always easy.

Of course, there are automated utilities that locate and delete your temporary files, but they don't typically clean out all of the files. In some cases, you have to hire a technician to get rid of all the temporary files you don't need in your hard drive. Thus, it helps to know where they hide and how they get there in the first place.

Author's Bio: 

Unclog that PC using any of the Windows XP registry cleaners around. Read Windows XP registry cleaner reviews to know about users' first hand experiences with certain software. These reviews should give you tips on which brands are worth your try.