Over the time the performance of your computer slows down due to lot of programs that run in the background and also when you are starting up your computer. We usually install a lot of programs not knowing that they are configured to start when your computer starts automatically. This slows down your computer a lot.
Moreover there are many spyware that is installed in your system when you install some software applications. These reduce your computer speed. To get back the speed to which it was when you bought it, you have to use programs that detect these spyware and remove them automatically. There are many software applications for this purpose. With this you can change the speed of your computer to a satisfactory level.
Another way to change the CPU speed is to buy a new CPU of the desired speed and install it in your motherboard. For this you might need some technical knowledge or you have to outsource this work to some technician who knows how to install it. You have to be very careful while doing this. Any mistld give you an irreversible damage to the computer.
[tags]RAM,HDD, DVD Writer[/tags]