You shouldn't be surprised as I don't think Larian has made it a secret that the EE version is a D3d11 game. DX10 was fine, a minor improvement over d3d9, but D3d11 is better, and D3d12 is much better, still. If you bought a GPU in the last few *years* it will be compatible with d3d11 and support D3d11 in hardware.
Windows supports d3d10 & D3d11, and d3d12, not to mention everything from d3d7 up to d3d 9--so the problem is that the EE is not compatible with your card. The original game will run on your card, but if you want to play the EE version you have to pony up for a new GPU--(Here's hoping you aren't stuck with a non-upgradable laptop...!) If you wisely invested in a desktop you can buy D3d11 cards starting @ under $100--you can buy 4GB d3d12-compliant GPUs right now for ~$200...! (R9 380 4GB, for instance) D:OS EE will not be the only game that your card won't support...soon it won't support most games that are coming out.
