Computers have become a very important part of our lives since we need to use it for various purposes like working, communicating and entertaining ourselves. There is lots that can be done through a computer. Sometimes we do not have the time to run to the computer repair centre when there are small hardware or software issues in the machine. You need to solve them all by yourself to save time and money.
If it is a software problem and the operating system does not start, you will need the OS CD to re-install it by following the setup steps. If even that does not work then you might need professional help. As far as hardware problems are concerned, keeping the motherboard clean is the first step. If the RAM is cleaned and inserted again, it might solve the problem. For other serious issues you will need professional help though.