Hello to all,
So disassembling and trying to "double-bake" my broken nvidia card was one of the very less options available.
I decided it is worth a try, then carefully read few tutorials, because for example unmounting logic board and few other details were little bit different on my iMac than it the attached tutorial by twistedbydesign, but I succeeded to reassembly it and...
...and my iMac started to work again... now it's almost 2 months and I hope it would last...
razorme: I just wonder is your iMac still working?
That's great you were able to fix your iMac. My 2007 24" iMac is still working perfectly 16 months after double-baking it. It's my main computer and used daily (but not for much gaming). I wouldn't mind an upgrade to that retina iMac though!