Thought of that, but it doesn't allow me to replicate the issues I'm having with MC14. this is predominantly to do with Theatre view messing up the screen image size after resume from standby. I'm outputting at full HD via HDMI to a plasma. ATI card (HD4200 I think), latest drivers (but the problem predates when these were installed). Sometimes it's OK, sometimes Theater View seems to try and display a much larger image, so that I see the top left 2 thirds of the screen. Sometimes this persists when you try and navigate, sometimes it resets back to normal. Once in a while I get a smaller than expected image, not filling the screen, with the desktop behind. Ctrl-1/Ctrl-4 to put it out of and back into theatre view fixes it.
I put this in an earlier post (under MC14) but didn't get much response. Strangely the problem seemed to coincide with playing a few 3D movie files (AVI or AVI) which have odd resolutions. May be a red herring, as these play OK and the problem is ceratinly not limited to when I've viewed 3D material. I've no other machine outputting via HDMI or at that resolution, and it would be a major pain to relocate another machine into the middle of my home cinema rig.
I presume that if I rebuild the machine (again) from windows up, I could re-install MC15. I'll have to check but the last image I took should include MC14, but not MC15. Don't want to do it, but if it's the only way.....