The scanner actually is working, but when I press the button, it doesnt do anything except just stay powered. It is a HP PrecisionScan, ScanJet 4200C. I downloaded the update to make it work while using XP, then i restarted and it still doesnt work. It used to work with XP for some reason, then about a week ago I unplugged it from the USB on the computer and now when i re-plugged it in, it powers up, but doesnt do anything when you try to scan. I'm not sure but isn't there a way to re-install USB drivers, because I think thats what i had to do for my webcam because the other USB driver died or something.