I have a Western Digital Model WD3200 It's a 320 Gb. WD Caviar SE. It won't start. Other hard drives in the same machine work fine. In the POST screen it says Primary Master None. In the second POST screen it says Boot Disk Failure Insert System Disk And Press Enter. The drive is not spinning up. It isn't recognized as a slave either when I try that. It's not frozen bearings. I opened it up and the discs spin freely. I think it's an electrical circuit problem in the drive. I'm thinking about buying a new one and swapping out the circuit boards in them. Have anyone ever done this????