Hi Doug,
Having looked at the unfortunate sequence of events in this posting, I think that the situation might be as follows.
1. First of all your system was working OK until recently, when NAS stopped functioning. This problem was probably caused by the most recent Windows 10 automatic upgrade, where Microsoft disabled a function known as 'SMB1.0'. (M/S did this as they now regard SMB1.0 as a security risk). The same thing happened to me a few months ago. This can be fixed; I'll give the details below.
2. Then, with all of the further actions taken to fix item 1 above, I think that 'DLNA' became enabled on your B2. This would explain why your B2 did not boot up in the normal time (i.e. in seconds). When DLNA is running, each time the B2 is rebooted, the DLNA process rebuilds its database entirely. If you have a sizeable collection, say 20,000 tracks, the DLNA will require 30 minutes or more before it allows the B2 to continue the reboot to completion. My reason for thinking that DLNA is running is that you mentioned having a Network Media Devices location of 'BrennanB2:root' which is a DLNA Status page and is only there to tell you of the status of DLNA at any time.
Suggestions to make are:
On the B2: (to get DLNA stopped)
Firstly, power up the B2, but leave it booting for a hour or so to allow the DLNA to complete its rebuild.
Then, if that is successful, when the B2 has fully booted, get into the B2 menu option to 'Stop DLNA'.
On the Win10 PC:(to get NAS working)
Go to 'Control Panel' -> 'Programs & Features' -> 'Turn Windows Features on and off' -> Scroll down to 'SMB1.0/CIFS File Sharing Support' and expand the boxes (click on the + box. Tick the boxes to enable 'SMB1.0/CIFS Client' and SMB1.0/CIFS Server' options.
Other points to note are:
1. If you are using Sonos, the B2 NAS access needs to be through 'Network', 'BrennanB2' and not through a mapped drive (such as Z:\Music).
2. Once you have SMB1.0 running, the B2 should appear automatically in the 'Network' location on your PC.
3. When running SMB1.0, you should keep your anti-virus up to date to give yourself maximum protection against hackers.
4. You can have NAS and DLNA running together, but in my view DLNA is not vey suitable on the B2 unless you intend to leave the B2 powered up all the time. Otherwise you will encounter the exceeding long boot up time on your B2 during each power up. The issue is a 'design feature' of DLNA and is not a Brennan issue. I have had DLNA and NAS running together on my units but decided that DLNA wasn't suitable in my situation.
I have a B2 (2.5 years) and a BB1 (4 months) and both have performed flawlessly. They are great devices so don't give up!
Hope that this helps and good luck!
Regards,
Peter.