Quote Originally Posted by John P. Myers View Post
If you do a free "upgrade" from win7/8.1 to win10, you do not receive an activation (product) key, and no amount of digging will uncover one. M$ determines your computer is allowed to use Win10 by memorizing it's hardware configuration and storing this information on their servers, then creating some sort of secret key code from that. If you change your hardware, you're done. If only you had a product key...but wait! M$ will gladly give you a product key for your "free" "upgrade" for the low price of $100
All this is true. But worst case, you still have the win7/8 that you are using now. My point is that there is only up-side with what I described above.