The warranty might get voided because the manufacturer only supports xp home
for that laptop. Meaning they have installed it, set it up, and tested it
with xp home and they know of no problems with xp home and the laptop in
regular functioning circumstances. If they do not support xp pro on that
laptop it basically means they haven't tested xp pro with there laptop setup
and are not sure of what the outcome of xp pro running on the laptop would
be. Thus since they don't know how it will act/react with their laptop they
don't support it, thus if you change to xp pro, they don't support it, you
lose warranty and support. They can't help you with a laptop that they did
not test and setup for xp pro. The manufacturer is just covering their a$$,
that's all. They have control of the xp home install and setup and have no
control over a user upgrade to pro, so they can't support something they
have no control over. Kinda like if you run your car on alcohol instead of
gasoline, then blow the engine. The car makers not gonna help you out cause
you used un-support fuel. Sure we know that the laptop will most likely run
fine with xp pro installed as an upgrade, but the manufacturer can't be that
sure, they have to cover themselves.