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Hard Disk failure is one of the most frustrating problem you might encounter when you have a personal computer. A wise computer user knows that before you do anything or at least once every week,you should back up your files to a CD, DVD or an external hard drive. This way, you can protect your important data that you store in your computer. The hard disk plays a crucial role in the entire computer system. Without the hard drive, your computer will not function. Why, because this is where you install your operating system. Hard Drives generally have a long life cycle between 5 to 7 years. It will always provide you with important signs that may tell you that it is slowly failing. So you must be aware of the signs.