Why won't my Xbox 360 show video or audio?

My Xbox 360 wont show video and freezes?

• The problem is that my xbox 360 is not showing any video on the TV and the fan gets extremely loud and fast in less than 30 seconds. Even though I cant see the screen, I can move around on the dashboard and still hear it on the TV. But after about 20 seconds or so I cant hear anything moving on the dashboard so the console obviously froze. My guess is that it is overheating.. but why is there no video? I will be as specific as possible. The cord that connects to the TV is working fine, power cord is working (the light is green still), the lights on the Xbox are all green still, the TV is working and is set to the correct mode, the fan in the Xbox is working fine, there is not any dust buildup in the heat sink. Please help if you know what is wrong. And no I don't have warranty anymore... so sending it to Microsoft would cost almost as much as it is worth.

• Answer:

  The first thing to check is that the AV lead is set to the correct slider setting (TV/HD). If it is set correctly, or if you are using an HDMI cable, then use the red, white, yellow AV connectors and set the slider to TV mode, this should give you picture. If you were using a HDMI lead then your settings ) could be wrong. Plug in the AV cable and go to display settings (under settings, console settings, display and set the output settings to the 3rd setting down, check it with the HDMI lead then move it to the next one down and repeat until it stops working. If it doesn't solve the problem then it is probably a graphics fault and a microsoft repair job. As for the over heating I'd say it was a microsoft repair job, could be any number of faults. Try moving it next to a window or out of a TV unit if it is in one as these can quickly build heat