Welcome to MR and I'm so sorry your first post has to be about a problem.
I really don't have any experience with this. The only thing I do is save threads about various problems (just in case something happens to my set up). It sounds as though you have tried most of what has been suggested in the posts that I have read on MR.
Have you made any progress on solving this yet?
Maybe a more experienced member will think of something that you haven't tried so far.
Good Luck.
