A PC generally runs slower and slower as it gets older. This is usually not due to the hardware working less effectively, but because the hard disk drive is more fully occupied and there are more files that are corrupted or defective in some way. This causes the computer to run less efficiently. Therefore it is necessary to tidy up the files and links on the system, which will not only improve the apparent speed of the computer, but should also enable it last longer, before there is a catastrophic failure of the hardware, as it will not be worked so hard.

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