Hi Ive just re-formatted my pc and because the windows home cd was scratched it came up with a file error and would not let me continue. I borrowed another xp cd but it was xp pro which installed perfectly, however I cant get the cpu to pick up anything usb ierinter, camera, mp3. The usb hardware has been detected and device manager says it is working properly. But in other devices I have a big yellow question mark saying usb drivers not installed. Ive tried installing service pack 2 but at the end of the installation it comes up windows xp conflict verify?? Can any one please help?