the reason you have HDMI issues guys is cause the bios your flashing is modded from a non HIS official bios.
only way to get HDMI working is using a official his bios modified variety.. and trust me i have previous experiance on this issue, when i used previously a gigabyte 7970 bios, when used HDMI was useless, in my ever ending quest to find a working bios that would work with afterburner i found it but then i modded my own official bios as back then there where no tools to modify your official bios`s.
Im Running the standard BIOS on the card.