Dual Monitors not extending - Windows 10

[Cosmo Moonn]

Hi! I have a Samsung Curved Gaming Monitor and a HP Office Monitor. I plan to connect both of these monitors to my pc so i can have a dual monitor setup. I've tried countless cables, splitters and multiple test monitors and all my pc wants to do is duplicate and not extend. When i press "Detect Multiple Displays" it tells me that there isn't any and therefore doesn't give me any of the multiple display options. I've been told that this is an OS issue and i would love some assistance. My pc is from PC Specialist with a NVIDIA Geforce GTX 1660 super graphics card and i run Windows 10. Would love

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