Re Microsoft win 10 machines.
Don't believe Microsoft
"because they can’t be upgraded to a supported OS there will not be the normal secondary market for those buying new hardware. This means there’s no boon for charities or other good causes, and instead this is a recycling or landfill choice.
This is criminal.
Recycle to Linux.
Try this before getting a new PC. 30 years ago, there was a big switch from Microsoft DOS to Windows. Windows was unreliable (I'm talking Win95) so I tried Linux on my brand new Win 95 machine, while keeping DOS on a separate harddrive. I had struggles initially, but have used various Linux distros as my main operating system ever since. Nowadays I still always have Windows on a separate drive that I attach using a 5 1/4 inch trayless mobile rack that costs $25 Canadian on Amazon.
Extreme Electronics
Michael Wong