Re: "The OEM version is tied to a specific computer, but changing the
motherboard doesn't make it a new computer."
This is a really sticky point; from what I can tell, in some cases
changing the motherboard is ok, but in other cases it does make it a new
computer. [If changing the motherboard doesn't make it a new computer,
then what would make it a new computer? Changing the sheet metal of the
case? This is a question which MS has never answered, or been able to
answer, because there is no answer.]
The bottom line here is that if you have to reactivate an OEM copy for
this reason, it's going to have to be done in person by phone, and as a
practical matter, the determination of whether or not it's a new computer
or the same computer gets made by the individual that you are speaking to.
Consequently, exactly how you phrase your half of the conversation can
become very important. Changing just a word or two may make the
difference between getting a new product key and being denied a new key.
Paul said:
Retail versions can be transferred to any number of computers as long as
its only on one at a time. The OEM version is tied to a specific
computer, but changing the motherboard doesn't make it a new computer.
It may want you to re-activate by phone (if the change happens "soon"
after it was previously activated) but there's no license issues there.