Thanks for the reply. Earlier today I took the hard drive back out of the N54L and connected it to my PC.
So I have worked in IT for over nearly 20 years and played around with PC for over 20 years and I've never seen this, but it turns out the beeping noise from the video is actually the Ironwolf drive beeping. The drive also does not appear in Disk Management so I believe you are right, it's DOA.
Starting an RMA with eBuyer now. :(