The tool you use appears to be badly flawed. On your machine, as per your feedback, it reports that you use Windows 6.1 (which does not exist). On one of my machines it reports that I use Windows 7 Enterprise (to top version of Windows). The fact is that I use Windows 7 Starter (the bottom version).
I suggest you download and run the upgrade using this link:
http://windows.microsoft.com/en-us/windows-10/media-creation-tool-install
Remember that while most upgrades appear to work well, numerous problems have been reported in these forums. The range from minor hickups to making the machine totally unusable. This is why I only upgrade a machine when there is a compelling need. I also create and test an image of the system drive beforehand so that I have a safe backout path.