I see, thank you for trying. On my end those are all the troubleshooting steps I can share to isolate some software related problems like drivers and settings. The next step will involve re-installation of the Operating System to eliminate Windows 10 from the points of failure and we can focus on hardware.
The thing is re-installation of OS would take some time and effort while you could seek advise first from both LG and Lenovo since their hardware is involved in the picture.
Just give them the link of this message thread so save some time and skip the steps that we already performed and do whatever we haven't tried to resolve the problem.
Should you wish to proceed with the OS re-installation, you may always get a copy of the OS here: https://www.microsoft.com/en-us/software-downlo... and instructions are also there on how to create a USB recovery media.
Sincerely,
Lee | Independent Advisor
I am not from Microsoft, but I am a Microsoft user like you!