I hope you didn't lose too many datas.

Neverware
(a link to a wikipedia page)

If anyone has old laptops laying around, this is something I highly recommend. It needs 16GB+ USB stick for the install, that's the only thing I don't like about it. Supposedly, you can install this alongside your existing Windows system, it was just amazing to see this OS waking up for the first time on my spare laptop.

Judging from the reply posts, you may have been away quite a while? Were you okay while you were away without your computer? I think you need to work on your pc emergency strategy...

Windows OS is complicated, simplify, simplify and simplify. That's not a Buddhist OS, I say. Seriously though, preparing a spare OS on a separate drive is not a bad idea. Chrome OS has totally Zen Material Design, even more so than Windows 10.