I turned on my computer this morning and too my horror it shut down after about 2 seconds. I have tried other ram and things, no difference, the hard drive is starting because it vibrates when you lift it, all the fans are starting up fine. I tried taking out all the wires and re-seating them, and I have noticed something - you know the yellow and black came with the 4 pins that goes into the motherdrive, when I take that out the machine stays on but theres no graphics on screen, but when I plug it back in - it just shuts down again. Anyone know what is going on? or how to fix this?