I have a 2tb Seagate Barracuda and I think it is defective. I just installed it and it isn't working. Before it send it back, I just want to make sure it IS broken. When I boot up the computer, the hard drive makes a buzzing/ vibrating noise and isn't registered in the bios. Check out this video and tell me what you think please. Thanks! http://www.youtube.com/watch?v=hcmqZvhbXGY