This latest log is still a DirectX failure, but it’s because the -d3ddebug arg is still on your shortcut, that’s clearly not working for you without the directx sdk setup.
Is it still identical if you remove that arg?
Sorry again for your problems here, I understand it’s really frustrating!!
When you say you cannot launch UE itself, do you mean you have a version of UE4 on your machine, but that also isn’t launching when you run UE4Editor.exe?