Can't manage to get sound ouput through my headphones (Logitech G935)

Hey everyone!

Been trying to get sound on my headphones for several hours, without any success. Tried downloading Asio4all but i’m not sure which device i need to check, the internal soundcard of my computer (Realtek) or directly the headphones? Appreciate any feedback!

Do the headphones plug into the internal sound card or are they usb? If they plug into the internal sound]card then choose that one. If they are usb then choose the name the headphones are