Err, make sure you're plugging it into the long SATA port on the back of the hard drive.
Also make sure you got a SATA power HDD and not a molex, just in case.
It's definitely not a MOLEX powered one lol.
And I am plugging it in the correct way, but it won't like lock in, and the case is made so that I have to run it under the case between the right panel and the inside through these holes, and whenever it gets bumped into it pops out.
Am I just weak or is something wrong?