Cleaning the Windows 7 Registry
Like any version of Windows, Windows 7 uses Windows Registry. The registry in Windows 7 is a location on your computer where Windows stores information. The settings in Windows, the applications you opened and many other actions you have performed on your computer are stored in the registry. If you install or remove a program, it will also store registry data.
The Windows Registry can contain invalid and misplaced information. If the registry is clogged, your computer will perform slowly. A PC tune-up or registry cleaning is required to correct this problem. To remove or clean the registry, a registry cleaner is needed. There is no problem with using a registry cleaner, as long as the tool you use is supporting the version of Windows you use, it has a back-up option, and it is not a rogue registry cleaner program. Also, it is important to create a backup of the registry before cleaning-up the registry.
You do not need to clean the Windows 7 registry if you seldom change the settings on your computer and if you don't regularly add and remove programs. It will not hurt to keep a few invalid entries in the Windows Registry. However, a mistake in removing a registry entry can cause trouble instead of fixing a problem. A buggy registry cleaner program can make your computer unbootable so use a registry cleaner only if you understand what are you are doing.
For people who need to clean the registry in Windows, I suggest using only trusted applications or services. There are fake registry programs so be very careful when choosing software. An infected computer might send out fake warnings to clean the computer from spyware or clean the registry.