Please forgive me if this question is covered elsewhere in this Forum.
I finally decided to upgrade 2 x backup storage servers running Windows XP.
I tried installing a new OEM copy of Windows 10 Pro x64, but the installer issued an error message:
“This PC’s processor doesn’t support a critical feature (PrefetchW).”
So, I reverted to an OEM copy of Windows 7 Ultimate x64 which I had already installed on another PC several years ago, which appears to be running OK, EXCEPT FOR Windows activation.
I found this temporary solution on the Internet:
in Command Prompt, Administrator Mode:
SLMGR -rearm
Reportedly, I can do that 3 times, for a total of 90 more days withOUT formal activation.
QUESTIONS:
Where can I purchase 2 x product keys to activate two genuine copies of Windows 7 Ultimate x64?
(I wish to avoid any more trials-and-errors: been there/done that.)
And, what is the easiest way to activate that copy with those 2 x product keys?
(I have done this once already with Windows 7 Pro, purchased on eBay, but activation required a complex telephone call that required several long integer numbers.)