"No fiber optic audio sound connection"に関する回答Raajit, is it a special driver or what? As far as I know, the fiber optic audio connection is a very sensitive thing. And I am not sure if the Yellow Video cable Menu system might be a solution on this problem. Maybe, it was just a bug. I have the same matter on my computer. Occasionally, the audio disappears and I can do nothing with it. At some time it returns to its normal working process. It's really strange to explain. And where have you purchased your cable? I know one reliable company which specialize in https://v1fiber.com/ fiber construction and other services. Thanks for your attention.