Gene,
I've upgraded my exam rooms Pentium Dual Core PCs ( about 8 years old, Dell Vostro 230, 4 GB RAM), from Win 7 Pro to Win 10 Pro and they are running Amazing charts 10.0.1 just fine. My main computer is much newer and has much better specs / RAM. It is still running Win 7 Pro.
no problems with activation. I did get some valid licenses off eBay. They are for system builders. They require you to overwrite the old system and data, which was fine with me. They were about $30 vs the $180 required for upgrade license (I plan to buy the upgrade license for main computer).
With all the problems Windows 10 updates have had this year, I plan to wait until the last minute to upgrade the main computer.
