These are the requirements for DirectX 12:
1. Your GPU MUST support DirectX 12. For example, the AMD Radeon HD 7340 cannot. There are some others as well. Check with AMD/Nvidia. Intel HD Integrated GPUs most likely cannot support it.
2. You MUST have the latest GPU driver installed, and it MUST be for Windows 10 specifically.
That's all I know of. 😛