I am in the midst of swapping hard drives. I have the hard drive in and connected and am loading windows 7. When Turned on with the O/s Disc in, a message box pops up stating there is no hard drive click ok to load drivers. With no Disc in I get a media test failure message up. I have tried to use the intel install disc and that does not load. I have tried several SATA Cables (all are known to be working). What am I failing to do or doing wrong?