It is possible for the fan to go that quickly, it is a moving part, and moving parts are where you are most likely to get failures. Since its less than a year old, it's definitely still under warranty, so if you can't fix the problem yourself, definitely RMA it.
Alright, I guess that makes sense.
Something strange just happened, the noise is completely gone.
I was replying to you on my phone while I was in garage working on my car so I was away from my PC.
I checked to see if the fan had stopped working as you have said it may be dying. I bumped up the fan speed to 70%, it still works. Any idea why it went away? It's not I want it to come back, just curious lol