This is the software publisher’s description.

Tired of Windows crashing? Sick of having software lock up on you or taking forever to load? The problem could be all of those incorrect registry entries caused by software installations and un-installations that went awry!

Not all software un-installations do a complete job leaving behind numerous nagging file references in the Windows registry pointing to files that no longer exist. In time, you can end up with hundreds of these files that may slow down your computer and cause software to lock up, requiring a hard reboot of your computer.

Keep your PC fast and reliable! Registry First Aid scans the Windows registry for orphan file/folder references, finds these files or folders on your drives that may have been moved from their initial locations, and then corrects your registry entries to match the located files or folders. In addition, if your registry has links to files of deleted applications, Registry First Aid will find these invalid entries and remove them from your registry. With Registry First Aid, your Windows registry will be always clean and correct, helping your programs load faster and speeding up your computer.