I did think about that, and I don't have the receipt for it. It was bought for me by my former employer that couldn't afford to pay me money, I was paid with PC parts. Even though I registered it for the lifetime warranty, doesn't do me any good cause I have no receipt. I think I may take it apart, clean it out good and see if she quiets down. If she still makes too much noise, I'll just take her out back and shoot her!!j/k I'll consider replacing the fan at that point
Thanks for the help!
Ok, I was actually able to stop the fan by pushing a plastic dart tip through the screen to the bearing housing and slowly stopping the fan, assuring myself that it was indeed the fan! Noise has yet to return, so we'll see!