I've just plugged the charger into another power outlet. It was previously on one of those cheapo extension cords with the three non-grounded outlets on the end (like the ones you use for christmas lights) with two clock radios (i'm a very heavy sleeper ) Now, it's not making any real audible noise, so I think I just found the problem. I'll tell you if it worked or not at about 3:00pm, I need to go take a final exam now .