The windows registry holds information about the configuration of essential components and installed third-party applications on a Windows-based operating system. As such it is a very important portion of your PC’s system. It is a very complex set of instructions for your PC to follow, and these instructions are executed whenever the computer boots and whenever an application launches. The registry can be modified by a variety of programs and also manually by the user. Viruses, worms and malware can also write here. Some malware use the registry to reinstall them whenever the system boots by instructing the computer to reinstall the malicious program by writing registry entries. Thus even disinfection by an antivirus or anti-spyware software can be rendered ineffective by these programs.

A thorough registry cleanup is essential for many reasons. For security reasons mentioned above, a regular registry cleanup is required to stop annoying software from plaguing your computer. Also windows installers and uninstallers may not be so well-written as to write and erase effectively to and from your registry. Improper uninstalls often leave redundant registry entries which clog your registry, and cause your computer to slow down after a long time. Especially programs that are not targeted for a mainstream audience may have an uninstall problem. Many other problems such as broken links in the dynamic link library and shortcut paths can cause failure of application launches. If you frequently install and uninstall programs, cha