Today's computers have built-in cooling fans that keep the computer from overheating during normal use. If your computer's cooling fan malfunctions, the computer will overheat and cause irreparable damage. Keeping the computer fan in tiptop shape is fairly easy. You can also extend the life of your computer monitor by giving it a little breathing room. Don't block the air vents on your monitor by piling papers or books on top of it.
Most fans are on the back of the computer, so position the computer a few inches from the wall.
Keep draperies and other fabric away from the fan. Keep the fan clean and free of debris. Keep dogs, cats, and other hairy pets away from the computer. Keep your computer in a clean, well-ventilated area. Open your case once or twice a year and use a computer vacuum or can of compressed air to clean out built up dust and debris.