Dual Booting Windows & Ryzentosh, also audio problems.

My setup is this:

1. R5 3600
2. Red Devil 5700xt
3. 2x8 3200 corsair vengeance
4. Silicon Power NVME
5. Crucial ssd
6. Mobo B450-F from ASUS

I had windows installed already and did a ryzentosh (Latest Catalina).

My issues are that my windows isn't showing on my open core boot menu.

My other issue is that I have some speakers plugged in to my case and heaphones plugged in to the back of the mobo. The Catalina OS detects my speakers as headphones which is fine because they work, The problem is that it doesn't detect my headphones. My headphones use an splitter for headphones and mic.

Thanks in advance for any help given1