What puzzles me is that -7 is usually a Mac error while 7 is normally Windows.
If you type Error 7 in the Search box, you will find over a thousand posts Error -7 reveals only 623. As you go through them, look for any that may apply to your setup. Again, 7 and -7 are generic OS messages that mean something didn't load or can't be found.
With Windows, this often means a driver conflict. You'll find pages of posts about that.
You can also send this directly to Support via the Submit a request link at the top of the page.