If you didn't already, you will if you have to reload Win 10 again. That the product key# found in older OSes is now in the "cloud or totally under MS control". That's means you couldn't defeat and yet again MS guards its secrets. This shouldn't apply to "paid for" versions but any free or recent upgrades will have this feature. But again, once activated you needn't re-enter the key#, its already registered. Whether its a good thing or not is up in the air.
Then on the other hand, provided you have WWW access you can reload the OS and activation is practically automatically done. At least this is how I see it.
If I misread the article, things have changed in a big way. Also, you better have a decent install and all is working to claim success in the long run, IMHO.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?