When maintained correctly, the average computer should last five to ten years; however, its lifespan can quickly shorten if you don't look after it. Keeping your computer in excellent working order will extend its life both externally and internally. Because PCs are such an investment, you want to get the most use possible. Would you rather pay for a new computer every two years or seven years? Here are eight of our essential computer maintenance tips you should follow to make the most...