Please help, cant reinstall xp pro

Hello,
I tried reinstalling xp pro on a toshiba p25 s509 laptop and some drivers didn't install, for example I couldn't change resolution, no standby mode, things like that didn't have a driver. So I tried to reinstall, was formatting a new partition and the power went out, and the partition wasn't formatted completely. Now I try to reinstall/ reformat Windows XP Pro Education Edition and it says it cannot detect valid copy of windows, cannot install from this "upgrade product", and I need a full version of XP Pro. I don't understand as I've already reinstalled this version once using the valid product key that came with the new computer and the official Microsoft CD, not some copy or pirated cd. I'm stuck, cannot go any further and the laptop is now a paper weight. Please help!