If only I could find out what that thing was... oh well!
It worked! Safe mode fixed it (although getting into Safe mode on a UEFI bios was not so fun) - But I now have FF7 working (kind of!)
I get a fail on 8 bit textures, and only have Software Renderer option. Is there any way to get PSX-Emulator style upscaling and Windowed Mode enabled? I also have no movies
EDIT : I've just installed the new driver that is linked in these forums and it seems to have changed nothing. Also insterestingly, since rebooting from Safemode, my computer has become amazingly sluggish. I think I have 'exposed' myself to a virus...
Resolution set to 1024x768 in the config file didn't help, I may have taken a step wrong.
EDIT2 : Back from work and I've been following a tutorial to install FFRemix, and thats solved most of my problems! Now just to find out how to put it in windowed mode and remove some of the unwanted mods!!