The program that windows associate with a file. Is termed as file association. Whenever we open certain file window first detects the particular type of a file, then associates it with the particular program and then launches that program for the user to view it. Once a user has finished working with a file and deletes it even then the window doesnt deleted the program associated with it. For example if a file has an extension .doc then windows knows that the file is a word document and uses file association to open the file in the Microsoft Word application. Or if the file has a .bmp extension then file association will open the file in Microsoft Paint by default.

In similar manner a user uses a huge number of programs. They get accumulated into the registry over time hence cluttering upon your system. As a result machine crashes. Many times certain files are downloaded from the internet. They might use a third party program Once we are finished with pour work we delete those files but those programs are not removed. Windows stores them for future references. The list of such programs builds up over time and we need a windows registry cleaner to clean the registry of these redundant files and programs.

A file extension is a set of alphabetical characters, sometimes these are alphanumeric, and these are placed at the end of the file name after a period. These are given to differentiate which file is associated with what type of program. Even this information is recorded in the registry and needs to be cleaned with a windows registry cleaner regularly.

Many people when face these problems of certain errors while working on the machine or occasional shutdowns for no reasons wants to throw their pc and buy a new one. Some may also want to invest a huge sum of money and increase memory to ensure smooth running. None of these are needed except a good registry cleaning software.

Care must be taken while downloading and installing new registry cleaner software. Registry cleaners are new too many users so one must not mess with the registry yourself. Experienced users manually edit and delete obsolete data. It just takes a few couple of minutes to download a Registry Cleaner software. However it depends on the speed of your internet connection. Installation also takes no more than a few seconds

It is extremely necessary to have a windows registry cleaning software to remove unused data from your personal computer periodically. Time to time invalid entries gets accumulated in turn slowing down the performance. A registry simply cleans it up ensuring smooth running of your machine.