from "How-To-Geek" http://www.howtogeek.com/265409/you-can ... lity-site/
extract from site
The free Windows 10 upgrade offer may technically be over, but it isn’t 100% gone. Microsoft still provides a free Windows 10 upgrade to anyone who checks a box saying they use assistive technologies on their computer. This offer will end at some point, but Microsoft hasn’t announced when.
basically go to this web page and click upgrade
https://www.microsoft.com/en-us/accessi ... s10upgrade
Hope this helps
Cheers
Rescue PC