New WD 2TB Black hard drive added to my secondary hard drive, and I completely installed the Star Craft II inside. When playing the game after half hour, the game no responding and the hard drive disappear from my computer, even I restart my system and enter the Bios cannot found the hard drive. But when I turn off my power supply and turn on again it shows up again. I had used the HD tune to make a check, it said no wrong tunnel, and I send my computer to customer services to made a check still nothing wrong. I don't know whats happen on my computer. The old 1TB hard drive is working well, and the my secondary hard drive I tried change the cable, but not works.