In today's fast paced life, nothing is possible without computers. All over the world, computers have become the primary support system to millions, across all kinds of functionalities. Hence the world comes to a standstill if something happens to our desktop or laptops. There are many times that we face the problem of a slow running computer, or a non responsive machine, and don't know how to fix the problem. Many of us who are regular computer users don't know the complexities of the hardware and software that make a computer run. So, when something happens that is beyond our control, we generally panic.