Its often said that the heart and soul of the Windows OS is the Windows Registry. To some extent these experts are right. Windows requires the Registry to work properly. If Registry integrity is not maintained, the computer will inevitably crash.
The information related to drivers, settings for hardware components including key operating system parameters, services, protocols, and application data are held in the windows registry
Many Windowse experts suggest that all systems running Windows should have Registry maintenance performed every three months, if not more frequently. Essentially, all outdated or incomplete references are removed. An individual who installs and uninstalls programs with regularity should repair the registry more often. Experts recommend this because insstalling and/or uninstalling software are two major causes for unused or undesired entries.
Remember to be very careful. If the Computer Registry is not repaired correctly the whole system could crash.
Regedit does not have any fail safe features that will prevent you from making harmful changes to the registry. Regedit is not one of those people who have an idea about what is needed, significant and of use to the system. There is also no way to determine what is lacking. That is not the best tool to fix the computer registry without the aid of some other tool.
It is not crucial to become an expert on the millions of potential entries that one might find in the Windows Registry as there are many resources provided to accomplish this particular task. The majority of registry tools take care of this automatically.
An example of a good registry tool would be regcure or registry fix. Both of these offer valuable tools to initially back up the registry before you make any changes, clean the registry and optimize your computer