Something is trying to connect to the web.
It happens when your not connected to the web, chances are good it Also happens when you Are connected to the web, the dial-up does not Ask to connect to go to the location shown.
You could hide the problem , by making various changes to the system. That would be what others have done. Instead, it would be much better to discover what is attempting to connect to the web.
netstat -ab in a CMDprompt to find out program names that are connecting to the web. Problem with this is , it would have to be connected or connecting at the time or recently. (reduce all other connections to keep the list as small as possible)
Check the registry run lists, for oddly named run items, or use MSconfig and HijackThis or other startup program viewers , and manually find the program that is doing it. Test in Safe mode, with the wi-fi not connected. (because most 3rd party programs and drivers will not be running in safe)
Re-check your spelling on the name that it shows, and check for the name on the web. (just in case it is spelled wrong and that is why it doesn't come up)
It very well could be a item connecting to the web that is not known in specific AV or Spy databases, or it is connecting for legitimate purposes. You could start trying a bunch of different spybot s&d and online AV and malware scans, and other fixes, till you run out of them.
I just think you can probably locate it yourself , either through the process of elimination (disabling run items). Knowing what should and should not be running on the system, or Oddly named , random named or Fake system named items. Test everything even that odd piece of software that you have had for ages, that might be hopping off to the web to check for updates.