Just like an automobile or any equipment, a computer will need to be maintained with some check-ups and servicing over time. There are varying recommendations on how frequently your system will need to be "optimized" or organized, but usually each month or so is OK.
The PC's windows registry acts as the "brain" for the CPU, or processor, and as your computer is used this area will become disorganized and cluttered with unnecessary and corrupted files and data. This will slow the computer's actions down and make it move slower. But with the best registry fixer and easy instructions you can do-it-yourself... easily and inexpensively at home.
Not only can you run an automatic scan of your computer but they will let you set up a customize scan that will only go into the areas you want it to. You will have control of this and other functions as well. Just like in the repair process, the program will repair what you set up and not mess with other areas.
Something else to think about too is that if you are not much of a computer person, like a lot of of us, and are not comfortable making the different custom settings offered, you can simply let the program do its job and go the "recommended" route. Everything should be reversible... again for your PC's safety.
Is your START-UP slow? A lot of times registry problems show up with a computer that is slower than it was before. A large percent of those using a good registry repair program have reported as much as a 70% rise in START UP SPEED.
Make sure your choice is designed and certified to work with all major computer systems and is an effective system for all Microsoft products as well as third-party software. Also that it is simple with "follow the instructions" scanning, testing and repairing.