Why is my xbox360 blinking red on the power on button?

When i start up my xbox360 it lights up green,,a few seconds later 1 red light comes on and rotates around the power button,how can i fix this

• Answer:

  Ah, you have gotten the dreaded 'Ring of Doom'. Prepare for some headaches. First, try to find out the problem. Each quadrant on Xbox ring indicates a seperate problem. You can look up online and see if it's a easy problem you can fix. For example, try unpluging all cords for the back and try rebooting the system. If nothing works, call Microsoft customer support, tell them you got the Ring of Doom, they will ship you a box so you can send them your dieased Xbox to Texas and "hopefully" try to fix it. DIY Method: Google up "XBox 360 Ring of Doom Fix" and you will find tons of instructions on how to fix this. It may or may not work for you. Please use caution with taking this route.