I found an interesting story on BetaNews.Com. The story is about a Windows 10 Creators update that gives Windows 10 a new System Reset option.
If I had know about it a couple of days ago I could have tried it and it might have saved me a LOT of work.
Over time, Windows can become sluggish, and beset with problems. A good system clean might be enough to keep you going a while longer, but not always. Worse, if you get hit with malware — ransomware in particular — or encounter major hardware problems, your only option might be to reinstall Windows.
Windows 10 offers users two choices here — go into Settings > Update & recovery > Recovery. Click the Get started button under Reset this PC and you’ll have the option to keep your files (removes apps and settings only) or remove everything (a total fresh start). However, in the Creators Update there’s going to be a new option.