ok so i was playing rock band for 2 hours with some friends. turn off my 360, come back to it 5-6 hours later and my xbox doesnt turn on at all. i unplug everything still the same thing. only when i plug in the power supply is when my light turns red, otherwise when its not plugged in, it is yellow. I tried a different power brick, different power outlets still the same thing. the xbox wont even turn on at all, and the red light is on the power brick. Any clues on to what can be wrong?? Thanks!

The Power Brick is having problems getting sufficient power from the Xbox and could possible be that the Xbox 360 is having Hardware Problems. If its still warrenty you could get it replaced or if it isnt you could get it checked by a Professional Modder