if it wasn't for the fact that i'm sure you did't move the jumpers i'd say its a possiblity that they are backwards (positive in teh negitive terminal). By the sounds of it you didn't change them around, but if you did remove them, try switching them.
No they were both SATA, the hdd works, I also used the Asus q-connect, the led was working before so I don't think its bad, and I disconnected the plug to make sure it was on the right way...plus I didn't change it from when it was workign before and it didn't work...
did u use the q-connect on the old hdd (sorry bout all the stupid questions, just trying to rule things out)
if avalable, i'd try plugging it in to another computer (as a slave so it don't mess up your drivers and windows activation) and see if when you browse around the new drive the second computers HDD_LED blinks.