Only able to use openGL

currently, im using the most recent build and am unable to use vulkan or dx12 and im not quite sure why. using windows 7 ultimate 64x intel i5 4690k and nvidia geforce gtx 760 driver version 368.39. switching from openGL to the others results in errors.

RPCS3 v0.0.1-3-c618e02 Pre-Alpha
F LDR: class std::runtime_error thrown: Verification failed: D3D12Module = LoadLibrary(L"d3d12.dll&quot
(in file C:\rpcs3\rpcs3\Emu\RSX\D3D12\D3D12GSRender.cpp:47)
F LDR: class fmt::exception thrown: vk::context::createInstance(): Assertion failed! Result is FFFFFFFAh
(in file c:\rpcs3\rpcs3\emu\rsx\vk\VKHelpers.h:1087)

i've tried running as admin and switching ppu/spu, but that did nothing. i would put the dll in and debug vulkan myself, but those directories dont exist on my hard drive. assuming rpcs3 is working as a virtual machine, it still cant find the dx12 dll which is strange. theres really no interface where i can look at its insides either. any ideas on why they might be failing and how to fix it?

DX12 only works under Windows 10, Vulkan, theoretically, supports Vista and up but it all depends on how it'll be implemented in the driver.