Ok, we have tried numerous drivers from numerous manufacturers, including everything suggested here. We've spent way too much time on this, so tomorrow we are going to restore it back to it's original condition and send the darn thing back. AMD and HP support were both about as worthless as worthless can be. Anyway, thanks for the attempts at helping, but best we can tell at this point there are no windows 7 drivers that will recognize the HD 8750M graphics card. Thanks!
3/14/13 at 4:17pm