I'm new to 3D software and after giving 4D Cinema a go (which works great but is too expensive for a hobbyist), I found Houdini.
After a fresh install and a reinstall and a reinstall, I keep running into problems. Some I've tried to fix using help on this forum and Google.
Unfortunately some are persistent and I can really use your help.
Here's some system info:

And some details on my graphic card / driver:

1) OpenGL shading: I added the system variables, however on the Intel website it says that OpenGL can be enabled. Is there a huge difference?

2) “NT_Generator…” console message. I tried to solve it using a system variable as suggested in the forum. Unfortunately it didn't solve the problem.

3) I get error messages when I try to do “File > Import > …” and “Render > Create Render Node > …” (perhaps it occurs when I select other menu items too):

Thank you in advance for your help and… I can't wait to get creative :-).
Best regards,
Dennis