How should I handle HDMI outputs on a unsupported card?

Let’s say I own a Gigabyte z390 aorus pro WiFi mobo and a i5 9400 and a RTX 2060S. I’m using the igpu in Mac OS obviously. When I boot my computer up to the bios. Should I use the mobo’s hdmi until I select windows or how should I handle that?

submitted by /u/spottyboyy
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