I have a Windows media centre PC that was running Windows 7 64bit.
It's connected to a TV via HDMI and a second TV in the bedroom via HDMI extender over Cat5/6 cable.
All was working flawlessly on W7 but after the upgrade to W8 it no longer works (the second TV says 'no signal')
In windows 8 I can turn on the option for the second screen to duplicate, but it still doesn't work?
The nVidia control panel shows it as an Analogue Display (even though it is plugged into HDMI)
I can normally nut this stuff out, maybe it's related to my wisdom teeth being removed on Friday. I didn't realise they actually contained wisdom!!
Cheers for any help