Repairing A Corrupt Registry
If your computer is bogged down with temporary, obsolete, and leftover registry entries, then it won’t really perform as fast as it should. The only way to really clean the registry is to use registry repair software programs.
You should never try to fix a corrupt registry by hand. This is a great way to break your computer. You shouldn’t mess with the registry unless you know exactly what you’re doing.
The Windows registry is notorious for getting clogged with registry entries that are often leftover when an uninstallation procedure does not remove all traces of a program from your computer. These leftover files can have severe detrimental interactions with new or current software. It’s a good idea to run a registry cleaner after you have uninstalled a program.