Strange HardDrive Problem

I was up last night actively using my 1 TB storage hard drive so i know it was working to its full capacity. I shut my computer down for the night, the next day, my hard drive is not detected in My Computer or at bootup in Bios.

I open up my tower, to find that my hard drive is spinning, it has power to it!
I tried a few differnt Sata Cables None of them changed the fact that it was Undetectable,
One configuration of my Sata cables actually made my PC not detect either of my harddrives.
I tried my hard drive in another computer, and had no luck. I tried other(older) hard drives in my computer and they worked fine.
When I do have it plugged in, my bootup uses the full 35 seconds of the Harddrive wait time to detect it before continuing bootup,
I assume my computer knows something is attached, and tries to recognize it.

Anyone have any ideas, I will try anything! I just want to eliminate all possible anything before i ship it back for warrenty. I dont wanna lose my TB of stuff