okay, small problem.
Finally connected my PC to the new TV via HDMI. (Distance 2-3m)
Everything works great! I can play WoW on it and everything... but it has no sound.
My current setup is as follows:
2x 22" screens plugged in via DVI to Nvidia 560Ti
1x 47" screen plugged in via HDMI to motherboard
I have used this setup previously and even as my default while at uni. (sure it was a 22" screen but everything else was the same) I updated my drivers for the "Intel 3000 graphics" via Windows Update but no luck.
Summary:
Displays work fine. Sound on any device other than the TV works fine.
All hardware other than the TV is the same as a previously working setup.