I did this entire teardown and when I was done reconstructing the Xbox and turned it on the power on light turned on and it played the power on noise every couple seconds and wouldn't display anything on screen. It wouldn't react to the eject tray button but would react to the sync controller button. After a couple of seconds of that the power on light turned off and the noise stopped playing. Any idea where I went wrong? There is no hard drive btw, I'm using an HDMI cord for the audio/video.