Really? Microsoft is ending the free upgrade? I haven't kept up with it so I don't know how the new sales policy works. What is it now, a subscription you have to sign up for? Everything is going that way these days.
If you still have your Windows 7 disk, you might just re-install that operating system and then go step by step through the upgrades in 7, 8 and then 10. Painful, I know! But that may be a way to do it.
My thing with newer Windows versions it that Microsoft constantly imposes it's design philosophies on everyone. I loved Aero Glass in Windows 7, but they took it away in 8 and haven't re-introduced it completely in 10 (you still can't get transparent caption bars). They also took away the ability to change your icon font, and now in 10 you can't even get colored caption bars. You get a white screen with a white caption bar. How idiotic is that?
Fortunately I have workarounds for all of that. I implemented a hack that gave me colored caption bars, installed a 3rd party plug-in that gave me aero-glass, and there is a registry entry that you can set to give you your choice of Windows fonts. So I have a tweaked Windows 10 that has Times New Roman font in my explorer screen, transparent-blurred caption bars and my choice of colors. I love being a computer geek!
To get your Windows font, set this registry entry:
HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics\IconFont = <your favorite font name>.
** Unfortunately, this is a binary value so setting it is a little tricky.
This article talks about getting colored caption bars back in Windows 10.
How to Get Colored Window Title Bars on Windows 10 (Instead of White)
To get back color choices, follow these steps.
1. Press [window key]-R to open the "run" box.
2. Type "control color". This gives you the color options you had in Windows 7.
This web site has info on the aero glass plugin. The latest version for Windows 8.1 also works with 10.
Aero Glass for Windows 8.x+
Like Abraham Lincoln once said, "You can't believe everything you read on the Internet."