Mother Board Display port not working

My Mother Board Display port is not working now but graphic card ports are working but my graphic card have only 2 ports but i need 3 and my motherboard display ports were working properly earlier but not working now . my cpu is 12th Gen Intel(R) Core(TM) i5-12400F 2.50 GHz and gpu is Nvidia GeForce GT 610 and it is dedicated and my motherboards model is B660M D2H DDR4 GIGABYTE

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Hi @varenyamga51015

What is the make and model number of the motherboard in the PC?

Just verifying that you wish to have 3 monitors connected to the PC, is this correct?

Has this option worked OK before?

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bro my motherboard is Gigabyte B660M D2H DDR4 and my bios version is F30

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Is the OS detecting the 3rd display when it's plugged in? It could be that the display is connecting, but not showing content.

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@varenyamga51015

Just to clarify that all 3 video ports i.e. motherboard + 2 on the GPU card all worked together before or that the motherboard video port worked OK and then you plugged in a GPU card so that now the 2 GPU card video ports work but not the motherboard video port, which is it?

Have you checked that the motherboard video port is still enabled in BIOS > Advanced mode > Settings > Internal graphics?

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@jmehnert bro I don't know how to check like I just know that when I connect my hdmi or vga cable into my motherboard so my monitors become black for 2 secs and then show no signal I think that the monitor is detecting the cpu

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