i badly needed your help.
i bought a second hand toshiba dynabook with a pre- installed windows xp os from my female classmate. the initial username was that of the original owner. when i added my name in the user name, that's where the trouble started. a window would always appear telling me that the windows xp home edition i am using is not genuine. i tried to correct the error by following the directions in that advisory and "re-entered/ re- installed" the product key (the microsoft sticker found underneath the laptop) but to no avail.
please tell me what i should do. thank you very much.