Thank you for your interest in my issue. As I mentioned above:
"in "Network and Sharing Center" under active networks I see "You are currently not connected to any networks." The link to "Connect to a network" shows that I have no networks to connect to."
A screen shot of this is on Dropbox at: http://db.tt/Qyy6eSAh
Therefore, in Step 2 of the "Choosing a network location" procedure you pointed me to follow, there are no links in the Networks and Sharing Center for me to accomplish the change. If I attempt to create a network connection, it automatically selects WAN
Miniport (PPPOE) as the network adaptor, which in essence does nothing and cannot connect to anything. I cannot create or connect to a new network.
Per your second request, a screen shot of my ipconfig /all is at http://db.tt/H4ehKOrh
My network setup is as follows:
I have Linksys WRT54G2 wireless router connected to the Intenet via a Time Warner Cable Road Runner cable modem. Three devices are connected via Ethernet cable to the WRT54G2:
1) Sonata - this is the computer with the issue. It is a Windows 7 Pro 64-bit (SP1) machine. I use it as a file and print server as well as a web server. It has a static IP address so that the router can route HTTP traffic to this machine. (More on this
machine below.)
2) A Synology DiskStation device used for file backups
- A Western Digital TV Live Plus media center
In addition I have several wireless devices on the network including:
- A HP Pavilion laptop PC running Win 7 Home Premium (SP1)
- An older Dell laptop running Windows XP (SP3)
- An Android tablet
- my Android cell phone
Up until a few days ago I had no problems with all the machines "seeing" each other in Windows Explorer and in the Networks and Sharing Center . I was able to share files and print to the printer connected to Sonata from all other PCs.
Additional information about the Sonata server which may be helpful:
Sonata contains a Gigabyte motherboard with a built-in NIC - a Realtek RTL8168C(P)/8111C(P). This has been the only NIC in the machine for two years.
I have done considerable Intenet research on this problem. One place suggested that corrupted NIC drivers may be the problem. Therefore I installed another NIC into this machine, a D-Link DGE-530T gigabit ethernet adaptor. I disabled the Realtek adaptor
and configured the D-Link DGE-530T with new drivers which I had just installed. The new NIC still connects to the Internet just fine, but I still have the problems of (1) no networks in the Networks and Sharing Center, (2) the Sonata server still cannot connect
to my Home Group because the network location is still stuck in Public, and (3) machines cannot see each other consistently over the network. (I say consistently because on a few rare occasions one PC can see the others, and later they cannot)
Any help is appreciated. Thanks.