I have a Windows Vista Home Premium Laptop with a genuine license key. I was wondering if that key would be accepted as a valid key for Windows 10 if I downloaded the ISO from Microsoft and tried to install it.
Não.
O que faz você pensar que seria?
If I downloaded a Windows Vista Home Premium ISO (say, torrent) and tried to install it, would this key work?
Sim.
O que faz você pensar que não seria?