I had a WD 250GB hard drive in my Dell XPS which I am switching over to my custom built PC. When I plug in the hard drive in my custom built PC, the drive does not spin up but, if I plug it in without the SATA cable, the drive does spin up. If I try another drive in my custom built by connecting it in the same slot with the same cables, it does spin up. If I move the drive back to the XPS, it does spin up. Whats wrong? Is my drive dead? If it would help, the circuit board does look a bit brown in some areas.