Hi,
My two cents,
This Microsoft statement
clarifies that replacing the motherboard does *not* violate the EILA.
After giving it some thoughts a few days ago, I actually think Microsoft
has defined the clause very well, and it was people like myself who
focused on the wrong part/word of the clause.
Contrary to the popular belief, the key word may not be - system, and
could be a much simpler word - to, as used in "...move to another system".
It defines the "relationship" between the OS and the system, and in simple
words, where does the OS come from? Therefore, there is no need for
Microsoft to define what constitutes a system as it is not something that
it would care.
In all cases of changing/upgrading components, it will not change the
relationship between OS and the system, and it is parts of the system that
have been modified, and thus in my humble opinion, should not violate the
license in any way.
WGA may require a user to reactivate because it thought the OS has been
moved "to" a new system (due to components change), but reactivation is
for confirmation that it is not the case. I don't know if anyone has been
denied due to component changes, and it should not happen.
On the other hand, move a HDD in which the OS is installed to another
system will violate the EULA, and attempt to install on another system
will also violate the EULA.
Again, IMHO, the keyword may not be "system", but I am not a lawyer, and
that's my new perspective for sharing.