OK, unfortunately you have one graphics card. I was hoping perhaps you had two and we could swap over to the integrated.
Well, we seem to be rapidly running out of options. If we can't get into safe mode and can't boot into last good configuration the only thing left I can think of is, unfortunately, full-blown reload. Now perhaps one of my fellow compatriots has an idea, but I'm fresh out.
If you decide reload is the way you want to go I can give you some tips and tricks on saving your data. Programs will have to be re-installed; but things like pictures, music, word processor documents, etc. are all quite rescuable.