Your problems is either with your video or your ram...Make sure both are seated properly. If possible test your computer with a known working video card and or Ram.
I just had a problem like that with a Gigabyte board.....No beeps no post, nothing......wasnt the video, wasnt the ram, just a bad cpu seat......no power going to it...but the fan worked....doa mobo could be the culprit just do a prossess of elimination like they said above but most likley it is just a DOA mobo they are more common than ever now a days