hi bro , i got a motherboard socket 1155 gigabyte z77m-d3h ( something like this model ) , can turn on but no display , no sound beep if no plug in ram.

the problem begin so suddenly, my graphic card got problem, so i have been use the build in vga for awhile , searching google , youtube or movie. after few month i go buy a new graphic card and setup it, suddenly unable to turn on, try basic trouble shoot still same.
i do try to fix as this video https://www.youtube.com/watch?v=QXDOiXHwBeI but still not work.
how much if want to repair this kind of problem ?
And can tell me where is the address ?