Originally Posted by
MoonPieBlue
Been a long time since I've messed with hardware, but do you have more information. For example, are the computers the same type, are the harddrives the same type (from your above discussion regarding drivers they appear not to be). Can you get to the systems setup (generally there's some key stroke you press while its booting)? Can't remember for certain whether the drive type is mentioned there.
Are you trying to put the hard drive in the working box as the primary drive or a secondary drive.