Hello,
I just built my new pc with a GIGAGYTE (GA-MA770-UD3) motheboard with 2 gigs of ram graphics card etc. When i switch it on all that happens is the small fans come on but the large one doesn't and no bios?
I would start off by conecting to the on board video. if their isnt one then try an old card. Also try taking off a stick of ram. try clearing the cmos. It should be in your manual.