Windows 10 was up to date. I did not use the registry cleaner. I used to be a CCleaner advocate and would regularly use it. Default settings, minus some browser stuff, plus clean up old windows installations. No warning message or anything it wiped most of Windows. Now I need cancel all of my plans to spend all day fixing my computer because you guys thought deleting the operating system (rather than cleaning up windows.old) was a good idea. Thanks.