I am having a strange problem with one of three Windows 7 computers on my network. Let's say my network SSID is "networkname".
So I have this laptop that I'm setting up on the network for the first time. It successfully connects over wireless to "networkname". However, after a few minutes, the connection switches to local only. No more Internet. So I try troubleshooting it by disconnecting from and reconnecting to "networkname." Now the computer spends a full minute or two in the "Identifying..." stage of connecting to the network. When it's finally done, it says I am connected to local and Internet, but the connection is "networkname 2". And with that technically-incorrect name, the laptop can no longer connect to my homegroup, or view any network-shared files. The other two Windows 7 computers on the network (one running Build 7068 and one running 7000) are able to create and join homegroups, and share files and folders to each other just fine. But none of these features are working now on the laptop, I'm assuming due to the incorrectly reported SSID.
So how do I get Windows 7 to drop the weird "2" from the end of the network name and hopefully fix the networking issue?