GS108PEv3 Cannot Factory Reset

Hello,

Several  weeks ago,   I noticed, via my network monitoring software, that the web interface on one of my GS108PEv3 switches had dropped offline. However, the switch appeared to functioning normally otherwise.  I   power-cycled, and no dice.  I decided to factory reset.

I pushed the reset button for a few seconds and saw the lights go out momentarily and then, come back up.   It did not reappear on my network (web server) but  was   switching at least  VLAN 1 traffic.    When I tried it again, even following  every permutation of factory reset advice out there, it has not reappeared.  When I push the reset button now, nothing happens.... no visible change.

I have looked at my DHCP traffic; it has not asked for  an address. I set up a scan on the 192.168.0 network.  It is not there. I monitor MACs; I have not seen this MAC show up.

I tried every magic incantation I could remember and even clicked my heels three times and said, "There is no place like home."  Seriously, nothing has helped.

Three questions:

1. Any ideas on the reset switch not appearing to  function?    Is there another way to  trigger the reset?

2. Will this work as a "dumb" switch?   I don't consider a "yes" answer as a solution, but only as an indication of whether I can use it in this capacity.  I bought  these  particular switches for VLAN  and POE functionality.  I have them tied to a Cisco 4948, and I want the VLANs.

I just replaced this switch with another  of the same., even though I had a hard time justifying doing so with what I am experiencing.

3. Will the POE  work  without being able to "manage" the switch?

Thanks.