people here are generally VERY willing to help they just like you to do a few things such as fillout your system specs in the user control panel from your video which is somewhat helpful but sort of overkill all that is visible is that your computer is seeing or expecting to see two wired internet connections the reasons for that could be endless everyone here would need your system specs and especially a complete list of network adapters. Other than that all i can suggest is to attempt to identify the correct connection and delete the incorrect one.
This appears to be exactly the same problem I had.
In my case the cause was an application called "Bonjour Services" which is installed by iTunes and some Adobe products.
In my case both. This was the cause of the connection problem for many people a couple of months ago.
Check and see if you have this installed.
If you do uninstall it. It is't a required service.
Since I did that I haven't had one problem connecting since June 1.
If you don't have it installed I don't know, a lot of people were having this when RC first became available but it seems that most people have gotten it sorted out.
Try Clicking the first option "Set up a new...." and then select the first or second option on the new page. It seems that you have not fully established a proper connection to the router or access point. Work through the procedure from the second page.
Bonjour Service (Apple Program) messing with Windows.
Uninstall Bonjour Service from your program files, although I couldn't see an uninstall so I just temporarily moved it to my Desktop, restated my machine, low and behold connection to the internet and email.
I've since deleted Bonjour Service (which was only two files) and everything is fine.