The Windows Registry is a hierarchical database used to store all the information that the operating system requires to function. The registry is thus the “manager” of the operating system. It includes all the information relating to the computer’s configuration, users and their configuration, the hardware and the programs installed. This information is constantly being updated whilst the computer is in use and when software is added/removed/updated and hardware added/removed.

When a computer is new the registry is uncluttered and error free which means that the system works without problems. However, over time the registry increases in size as it gets filled with unused, incomplete and possibly corrupt entries. Whilst routine activities will have an effect on the registry, it is adding and especially deleting software that can cause problems. An installation may overwrite data already present and affect other software whilst an uninstall may remove data required by another program (particularly if you don’t read any warning displayed during the process). Some programs do not uninstall totally leaving bits to cause problems for the computer. Registry problems can also result from partially installed programs due to an terminated installation. The impact is missing or corrupt data which cause minor and major issues.

Also there is also a possibility that installing free programs downloaded from the internet may result in malicious damage to the registry. The impact of all this can be the PC:

• taking a long time to startup
• working slowly
• crashing
• showing odd error messages
• displaying unnecessary pop-ups
• showing ‘Unable to load’ dll messages.

It is possible for an expert to fix the registry manually but unless you are absolutely sure that you know what you are doing you should not attempt this. Making incorrect changes could render your PC unusable. For most people the obvious option is a registry cleaner designed for this purpose.

A Registry Repair Software should fix registry errors and greatly improve the speed of your system, however, care should be taken to backup the registry before running a registry fix. This is essential because Fix Registry Errors is not an exact science and it is always possible that some data will be removed that is actually required by another program or windows itself. If this happens it will be necessary to restore the previous copy of the registry.

To reduce the possibility of issues use a product from a well known software house. These will let you try out the program free and use it scan your registry for problems. You may be able to fix a small number of the errors reported with the free version but to repair the registry properly you will need to register.

As long as you are careful about taking backups, registry cleaners- along with anti-virus software, a firewall and anti-spyware software will enable you to keep your system working efficiently.

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