I'm starting to think it was the DVI connector..
Nope, It's something inside the computer. Same exact thing happens withe the VGA and DVI. The GPUs probably fried... I did some browsing on YouTube, and I found this video: http://www.youtube.com/watch?v=xBeBR4lkkM8What is happening in the video is similar to what my PC is doing.
but its under warrenty then it should be fixed/replaced by them
What is the brand and wattage of the PSU (Power supply unit) ?
The thing is, if you temper with the specifics of it, that warranty will drop off.