I've had my Xbox 360 slim model 1439 for about 17 months and it always worked fine but recently when I turned it on it displayed a blinking red ring on the edge of the touch screen power button. It also had a red blinking dot in the center.I tried unplugging the HDMI cord and the power supply and letting it sit in front of a fan because It was hot that day but when I tried again it still happened. I tried using a different outlet for the power supply but no avail. Please help!!!