Hi:
You first need to install the AMD chipset driver from the link below and reboot. First file listed.
http://support.amd.com/us/gpudownload/windows/Pages/raid_windows.aspx#2
Then all of the drivers and software from this related g7 model should also work on yours.
The graphics driver should install the HDMI driver according to the driver info.
DO NOT USE ANY BIOS OR FIRMWARE FILES