upgrading window 10 without reservation

[WPCentral Question]

I have to pc with genuine window7 sp1 installed. upgraded to window10 and got activated on one. But in other icon is not appearing at all .I have done a lot of things. I have downloaded the ISO and used it for successful fresh installation on previous one. Can I upgrade other pc with this ISO without reservation and get activation ?

some please help.

MPIC