All operations done on windows based operating system, works on a complex system known as computer registry. It is an area in the operating system, were the system variables are stored. Any programs installed on a system add its values to the windows registry and when running that program, the operating systems retrieve its values from it thereby helping in the smooth running of that program.
However the continuous installations and un-installations of the programs corrupt this particular area. There might be broken entries or the entries that have not been after the deletion of a program. Such entries pile up and start using a large portion of the system resources. This will reduce the performance of the system as a whole.
Cleaning the registry is one way to correct this problem. But just cleaning will not completely eliminate the problem. It may be fragmented and can result in invalid shortcuts. To rectify this problem a complete registry cleaner is to be used.
Following are the functions of this cleaner:
1. It cleans the system registry be removing the unwanted registries
2. It fixes the broken registries.
3. After performing the above 2 functions, it will be fragmented. So a complete registry cleaner will defragment the system registry.
4. After deletion of a program, it may not remove all the shortcuts created by it. A complete registry cleaner removes all such invalid shortcuts.
Cleaning of the registry is done comparing all the values in the registries with its linked position to software or programs installed on the system. If it finds that there are no linked programs to the corresponding registry value, it is considered as an obsolete registry and is deleted. Then it searches for the broken registries. When there are entries used by a program, but its values have been change by a 3rd party software or spyware, a complete registry cleaner insert it's corresponding values in the registry there by fixing the broken registries.
Defragmentation of the registry helps in accessing the registry values with a greater speed. It also reduces the space occupied by the windows registry. When installing software or a program, it creates shortcuts in different place for the easy accessibility of that software from different places. But when deleting the software of program, it won't remove all the shortcuts created by it. A complete registry cleaner removes such invalid shortcuts thereby removing the junks from the system.
So when purchasing a windows registry cleaner, it's always better to pay a few pennies more and get a complete registry cleaner and have a hassle free computer.