A registry repair cleaner, often just called either registry repair or registry cleaner, is a program that fixes the errors in your computers registry. The registry is like the brains of your computer. When you install a program on a computer running Windows, the important information about its configuration is stored in the registry for the computer to refer to again and again. When things go wrong there, a registry repair cleaner fixes them.
If your registry disappeared completely, your computer couldnt work. So when an error occurs in your registry, strange things can start happening with your computer. A registry repair cleaner is often used because the computer is running very slowly.
Sometimes, speed isnt the problem as much as programs that freeze, wont run properly, or lose data. Errors in the registry often will affect only certain programs because somehow that programs registry entries became corrupted.
Sometimes the problem is more widespread, though. Errors in the Windows registry entries of programs that are vital system programs can cause serious problems, like the entire system freezing and crashing.