I have tried the drives on a couple different computers with the same results. As I said, they power up perfectly. I went to the WD for support and they had a widget that is supposed to sniff out the drives. It showed that I had a WD500-whatever attached to the laptop, but no luck with the laptop seeing it.
1 of them initially would pop-in if I left it on a while but since stopped. I figured it best not to keep running the unit til I had a plan. I was told that you could take them somewhere and have the drives read and dumped on another drive, but its supposed t be pretty spendy.