Hi,
1.Why did you suspect that there is port conflict that resulted the problematic keyboard? And not sure what kind of port you are referring to as this is not plug-in keyboard.
2.Have you run the "Find and fix keyboard problems" via search? Is there any problems detected with Windows Built-in troubleshooter?
3.Please check if any driver update under device manager?
4.Please test by cleanboot if any third party tools or service that impact the usage of Keyboard.
How to perform a clean boot in Windows
https://support.microsoft.com/en-ph/help/929135/how-to-perform-a-clean-boot-in-windows
Hope this helps and please help to accept as Answer if the response is useful.
Thanks,