Ok, so just looking at others problems; have you tried:
Seagate/Maxtor has added a user-accessible jumper-switch, known as the Force 150, to enable the drive switch between forced 1.5 Gbit/s and 1.5/3 Gbit/s negotiated operation.
I am not certain of bios would change anything.
If it is not a jumper issue (please forgive me as I do not have one in my hand), then I would create a small boot partition, and see if that makes a difference. I wouldn't clone the other drive, as it has info for the other drive, you are going to have to build that environment for it to operate. Rebuild it. Then boot with the other drive attached and get the files.
If it is software you are concerned with, you purchased the license for one PC, well you only have 1.
Once again, I beleive it fails for the clone.
Let us know!