when you say you put IT into a USB-CASE. you mean you took the HD from the laptop and put it into an external enclosure? if you try to run XP off an external usb drive, yeah its gonna be slow, HORRIBLY. Now, if you're saying you're only trying to pull the files OFF the external drive onto the XP-Prof? That can take awhile too. you'll prob have to just start to copy the files over and let it run til its done.