My mb came DOA.We tried everything to get in bios but first of all it didnt gave us signal on tv,second it was stuck on A2 error code without reason.....we connected and disconnected hdd,ssd,rams.Asrock also sent me some steps we already tried.I also saw 3 more reviews on newegg and amazon that people received the same mobo with this problem.Is it possible that a whole batch has this problem?