I can no longer play Kung-Fu Panda since I accidentally kicked my Xbox
Also, the Xbox overheats really quickly which can result in a crash. The noise is simply the fan working really hard, especially for graphic-intensive games like Far Cry 2 or Gears of War 2. You can purchase a second cooling device, which straps onto the back of the Xbox, keeping it cool. Dunno about the noise of it though, I don't have a cooling device :P