Hi!
I've run into an issue with the hdmi output on one of my computers; I can not make it display full HD or any resolution other than 640x480 over HDMI since upgrading to Windows 8. It worked just fine under Windows 7. I'm currently running version 9.17.10.2932 of the intel WDDM 1.2 driver and everything looks like it should in the device manager but I had the same problems running the built in Windows 8 drivers. I've tried setting the resolution through windows and the intel utility, I've also tried changing the refresh rate and while it is no problem changing the refresh rate I still can't change the resolution.
Anyone got any ideas or suggestions?