After reading Michelle's story about the loss of her embroidery files I can't stress enough on backing up your files in as many places as possible. Here comes my disaster story:
When (reluctantly) converting to windows 10 I lost all my photo files on my computer. No problem I thought I have it on external hard drive. Forget it, this was not working, okay then my cloud back up! No success there; all folders were there but no photos in the folders (apparently it tried to upload from F drive instead of C drive). Then as last resort my CD backups. I got most of the photos back except for 2 holiday files and 1 family file.(of course the file of grandchildren as babies.) I had the luck that an computer expert could get these items from the external hard drive. So I have everything back. but even with backing up in so many places it still nearly went wrong. So if you back up do it in different places and check regularly that all these places are still working.