Common computer problems such as frequent error messages, crashes, freezes, and general “sluggish” performance are often caused by problems with the Windows registry.  Thankfully you do not need to replace your computer or bring it in for costly repair if the registry gets cluttered, corrupted, or damaged.Since the Windows registry is complicated and confusing, it is unadvisable to try to repair the registry manually.  Even experienced technicians are limited by time when it comes to finding all the broken entries that build up on a computer over time.Good registry cleaners can help find registry errors and fix them at the touch of a button.  These programs also provide fail-safes and allow you to undo any changes made to the registry.