Brakes on, you're welcome.
Be a little careful with using reg cleaners. It's not unusual at all for some of them to clean up registry entries that might still be valid. (Some are worse at this than others).
The effect of this might be that a particular program might not work properly following such a clean. Re-installing the program fixes this. (But it's a pain.)
Worst case is that a reference to an OS system file is removed (that is generally all they do- remove entries they perceive to be orphaned) - and the OS then needs to be re-installed.
Two reg cleaners I have had very few false positives with are Ccleaner (cryptically called "issues" in the GUI) and TweakNow registry cleaner.
Whenever running one, always select the default option to make a backup, just in case.