If your computer is running slow, you may just need to fix the registry in order to get it running the correct way again. This can be achieved in three quick and easy steps:
1. LOOK AND SEE IF THE REGISTRY IS ACTUALLY WHAT IS CAUSING YOUR COMPUTER TO SLOW
This is where an all- in- one computer solution will help you. This type of program looks for all kinds of problems, including viruses, spyware, and outdated drivers.
But if you have determined that the registry is actually the problem, then you need to:
2. BE SURE YOUR REGISTRY FILES ARE BACKED UP
**note: a number of registry cleaning programs will automatically backup your files.
Once you have done this, you will then:
3. FIX YOUR REGISTRY
The most simple step in this process is to do restore of your computer system, but if this is not an option, you could do one of four other things:
1. Perform a reformatting of your computer's hard drive and then install Microsoft Windows once again.
2. Go into the "regedit" part of the run menu to fix the registry.
3. Take your computer to a professional shop to get it fixed (but beware, you may be without it for a couple of weeks, and you will probably have to pay at least $100.
4. Use a program that will clean the registry.
This last option is your best option because it is easy, and does not cost much money. Fixing your registry on your own is very difficult, and it is quite easy to make a mistake.
Source: ezinearticles.com