a few months ago, my friend tried to add a new memory card to my computer (a Compaq Presario). however, i'm not sure what went wrong, but my motherboard got "fried" in the process. i eventually bought a new motherboard (and a new casing).
come now this problem: my new motherboard cannot read my OS (windows XP) apparently because that OS was "native" to my Compaq board. i raised this problem to this guy in our local computer shop, and he told me that he can re-install my OS by using the product code/key on my old computer.
i have 2 questions in this regard:
1) is this possible? (and legal?)
2) if he will succeed re-installing my OS, will Microsoft recognize my OS as "original"?
i appreciate any enlightenment. thank you very much.