It performs several functions, including defragmenting your PC's hard drive, repairing the incredibly problematic Windows Registry, and freeing up disk space by deleting useless and duplicate files. What Is a Tune-Up Utility?Ī PC tune-up utility is an application that digs deep into your computer and fixes trouble areas. Instead, you can get often that fresh-out-the-box performance for tens of dollars-instead hundreds or even thousands-thanks to a relatively inexpensive tool: the PC tune-up utility. But that's a drastic solution, and one that's frequently unnecessary. When our machines become so impaired through use and neglect that we can no longer use Microsoft Word or play PC games with the same speed and efficiency to which we have become accustomed, we often ponder buying new computers. Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. ( Read our editorial mission.)

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