this reminds me when my DFI board was shorting out becuase I had one extra riser in the wrong place...
I thought my mobo or cpu was dead
I felt so silly becuase I re wired evreything bout 6 times and I still got all the red LED's and such and it was not posting...haha.....so then I go so frustrated I took out the motherboard and to my suprise there was a extra riser...haha I will never forget that