My new modem has a constant humming noise that is extremely annoying, does anyone else have this issue? Also the range is very poor, I have it set in a central location on my 2nd floor. The signal does not even reach to my downstairs kitchen of a normal size home. A speed test on my phone cannot connect in the kitchen, but performs well right beside the modem. Previously I use a 3rd party router, but was told this would be better. Is this everyone's experience, or do i have a dud?