I didn't notice the Hopper making noise until the power went out. The Hopper said the hard drive was damaged or something. I wasn't able to view any of the recordings, and it said to unplug and I did. Everything started to work after resetting the receiver. I've noticed that the fan or hard drive make a lot of noise. It's not that loud, but it bothers me at night when everything is quiet. What can it be?