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I just recently purchased an HP Pavilion 31.5 All in one desktop pc 32-b0000i (3n9r4av) and am trying to connect a second monitor to it. I have tried connecting an HDMI cord from the HP desktop to my LG monitor and it does not detect. I also have a USB-C to HDMI adapter and have plugged the USB-C into the desktop and the HDMI from the adapter to the LG monitor and still nothing. This monitor works with all other computers so I am certain that it is not the monitor as I have tried a few others as well. 

I have updated all the drivers and it still does not seem to detect.  

 

Is there a special type of HDMI cord I need to be using? 

Is this a windows 11 problem?

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