Dual boot Mac OS Win 10

If I’m doing a dual boot with 2 SSDs, do I need to have an EFI partition on the windows SSD? I have tried just about everything I can think of, read article after article post after post but I cannot get this to work with both SSDs installed to my mobo.... individually installed they work fine. My mobo starts up and displays 00 with an error light on the mobo that is showing a VGA error. Which in the manual says the GPU is not working properly. The PC is on but a black screen appears, no bios just nothing. Do I need to disable the igpu in my config.plist? Im at a loss. (Second Post btw)

CPU: intel 10900k GPU: Sapphire Pulse 580 MOBO: Gigabyte Z490 Vision D SSDs: Western digital Black 500gb Win10 Western digital Black 1tb Mac OS

submitted by /u/SNODAZE_
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