i recently was given a computer which was pretty much in-operable. It had three SATA drives. I installed a PATA drive and everything worked fine. i installed one of the hard drives to it, removed all the bad data from it, and then installed windows on that one. however, when i try to disable the PATA drive and run entirely from the SATA drive it tells me there is no boot device available. When i enable the PATA drive it boots fine and i can boot up to my SATA drive. Anyone have any clue what's wrong with the SATA drive?