The Registry Drill examines every Key in the Registry in order to determine if all the correct format requirements are met. In this way, the Registry Drill is able to dig deeper than conventional Registry cleaners are, and it offers the convenience of both a Quick Drill and a more thorough Deep Drill. The Deep Drill can take several hours to go through the Registry, so it is recommended that you start with the Quick Drill and Search Root Keys. After that, the Drill will clean out stuck and damaged Keys and then compact the Registry for you. Not recommended for beginners, this tool is advanced software.