I would suspect yes for the OS. MB is not dependant on directx 12, GPU is
Corsair 760T
Asus Formula Z
AMD FX 9370
Corsair H110
Kinston Beast 2400Mhz 2x8GB
Sapphire Vapor-X 290X 8GB
5xSandisk Ultra II 120GB
EVGA Supernova G2 1000
Benq BL3200BT 32" QHD
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Corsair H2100