My 360S makes a loud humming noise, it started when i began playing BO2 and only humms while playing that specific game, theres nothing wrong with the disc and i have played several other games but it only makes the noise while playing BO2. The noise sounds as if its comming from the disc drive but i could be mistaken, the noise fades in and out and at times will just go away or completly rage. tapping the top of the xbox lightly makes it go away for a short time but still returns. Should I be worried and send it in? I would prefer not to because the warranty is up.