Make windows bootable again? Recover windows product key?

In short, I have a Hackintosh with HDD with windows 10 and an SSD with macOS Success' href='/2020/12/install-macos-mojave-on-supported-pc.html'>Mojave. After installing macOS with clover my windows drive will no longer boot. If I try to boot from my BIOS it just takes me to a black screen and the computer restarts. In the clover boot screen the windows option says "Boot windows from " and there's no drive listed.

 

Is there any way to make windows bootable again? If I have to reinstall windows, is there any way to recover my product key first? I don't have it saved anywhere. I can still boot my macOS side, and access all of the files on the windows HDD but I have no idea how to recover the product key from macOS. None of the recovery programs will run. Any ideas? Thanks.

Author: @Anthony_24