I have a WD5000AAKB IDE external drive (500 GB) in a rosewill external enclosure. This HDD is seen at BIOS when starting up but when it comes time to loading up Vista I get a black screen and it freezes. This is just before I am suppose to key in my password. Also when I have the computer on and then connect the HDD, the computer freezes (windows explorer) which forces me to reboot. I have also tried to place this HDD internally and at boot up it freezes as forementioned. When I tried connecting it internally it didn't work but when I disconnected the HDD it felt heavier or as if there was a differnt weight distribution. What can I do?