BoostSpeed scans your computer to pinpoint the issues that may be responsible for the slowdown, and provides a safe and easy way to fix them along with a complete kit of powerful tools to enhance every aspect of your PC's performance. At a click of a button it does all of the following (or only parts you want done): cleans out junk, fixes the registry, tweaks Windows and Internet settings, defragments the hard drive – all to get your PC running fast and smooth again.