Hi again!
You've really tried a lot, which is great 
Have a look HERE.
Though this does seem to be a different issue, I'm not really sure what the problem could be.
I do suggest you have a read through THIS and THIS.
Hopefully that might help as I still think it could have something to do with the smb version.
Also one last question, do you have any file named SRTSP.sys or SRTSP64.sys on your Win 7 machine?
Best Regards
Kimzi
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