We go to the doctor for a checkup to make sure our bodies are in good condition and running right. If not, then we ask what can be done to fix the problem. The goes for any other equipment that has been used any length of time. The life of a computer isn't very long because of all the new devices and applications coming out. There are times when these new things can overload a used computer cause it to need a computer tune up to upgrade it. This link can give you the right ideas to utilize.