When I try and use the Extended mode I get what I can only describe as the screen cut down the middle and rotated 180 degrees. EG the boxes aroudn the menu options show with the two ends in the middle and open ends pointing right an left.
I have rotated the display in the Win CP so that it's horizontal
Yes, what you had was what I had with extended, you have to tinker with the orientation of the Rift. Once you have it set so it looks the right way up in windows desktop (yes it's a nasty image but you should be able to see the correct orientation at least).
- Log into ED and hit play. You may see a peculiar double lens effect version of ED on your normal monitor, the head tracking should work though so you'll need to point your rift at the camera as if you were wearing it, then you should be able to navigate to the graphics options menu.
- From there select OR with headphones for the display mode and you'll probably have to select Secondary monitor (unless your rig is more than single monitor normally - in which case I'm likely wrong - I only have a single monitor + rift setup).
- Once that's done, the monitor screen should go to desk top view, you'll need to slip on your rift quickly, hit F12 to centre the rift view and accept the changed graphic conditions. From thereon you should be able to operate everything while wearing the Rift. Remember that the mouse uses the extended screen, so ensure the mouse pointer is in the Rift screen before trying to use it - or you'll be forced to desktop view. If that happens you can Alt-TAB back to Rift view.
I'd recommend supersampling to 2560 x 1440, there are many guides on how you'd do this for the Rift, it's not complicated and takes a couple of minutes to achieve. It'll hammer your GPU though, so I hope yours is pretty good.
Hope this helps.