Since I've had my chip in my Wii (WiiKey, if you wanna know) my Wii has been making vibrating noises a lot. I used to think it was the chip, but it's far too loud for it to be that. I'm not worried and games play completely fine; I just wanna know what that vibrating is. Sometimes it's so loud that I can barely hear Animal Crossing...well, it was quiet in the first place. Hitting my Wii seems to make it stop for a short while, but then it comes back. Any ideas?