I just dug out my hardly used laptop from last year, and after struggling with Windows 8.1 I was looking at getting Windows 10 for it.
It appears my free upgrade when I got it is no longer available (that offer expired in August this year apparently), and so I googled about for a decent deal on Windows 10, and luckily found a link from CNET saying you can still get it so long as you link to the link in my Get Deal.
You simply have to claim that you require 'assistance' when using your PC (ie need to magnify text, etc), and it does not check whatsoever. I am downloading mine right now, direct from Microsoft.
I don't know if this is well known, but might help others.
Valid for any PC running Windows 7 or 8.1.
gave it heat as my deal outlining the same free upgrade is now 10 weeks oldhttp://www.hotukdeals.com/freebies/free-upgrade-windows-10-assistive-technology-users-free-upgrade-still-available-2522379