Uninstall the Realtek HDMI driver.
Reinstall the CCC package and this time choose 'Custom Install'.
Check all boxes (there are a couple of items you can leave out, like a game trial and email communication).
Make sure the HDMI driver is selected.
Reboot after install.
Reinstall the CCC package and this time choose 'Custom Install'.
Check all boxes (there are a couple of items you can leave out, like a game trial and email communication).
Make sure the HDMI driver is selected.
Reboot after install.