I did the pin header install today as well, although mine was succesful. Are you sure u soldered to the DO? and did u accidently drop sum solder on the mobo? if u did it mite frag for that reason. Also check the chips, on the silver part I dropped sum solder and it fragged, but when i got it off, worked fine. ALthough i did melt like 3 or 4 of the lil silver things 2gether and it messed up again. but i fixed THAT and it works now. Hope this helps ya out, L8er