I have a hard drive that is not detected by the bios - it spins up and then you hear what sounds like a ping pong ball being dropped into a tin can "plunk, plunkplunk" and then about 2 seconds later "plunk, plunkplunk". Thought this would be a good time to learn and play with a drive (open it up and check out what's going on). I figure that there's nothing I can do to get ANY data off of it - or is there? To me it sounds like the arm that has the heads on it is trying to sweep out and read the disk but "plunking" back to the park position - is this an indication of the controller board going bad? Anyone know of a resource where I can read up and figure out what is failing - I've googled all morning but keep getting hits for data recovery services.... thanks john