? about 1.4

I finally got my new 1.4! I installed it on my new A7A board and now it won't post everything is running but i have no video I read about the new bios fix but i was under the impression this board allready supported this processer was i mistaken or what? I put it in my old a7v board and it runs fine but this board only supports processers upto 1200 whats up with that? it's running 1430 I can't quite grasp whats going on and is anyone familiar with my problem? any help would be appreciated.