Validating identity windows wireless
If, for any reason, the connection turns to Manual, in order to re-connect, just bring up the available Wireless Network Connection window by double-clicking its icon in the tray bar , select eduroam and click on Connect.In order to configure the connection back to Automatic, edit the eduroam profile, go to the Connection tab and check Connect when this network is in range: Figure 14: Setting Automatic connection  = If the Wireless Network Connection icon is not present, this may be due to the wireless network manager of your vendor's card taking over from Windows' built-in one (Wireless Zero Configuration).
Click on the Authentication tab and now uncheck the Enable IEEE 802.1x authentication for this network box.If that does not help, then consider uninstalling the Wi Fi netcard.Also, make sure that you are using WPA(2) Personal (PSK) for both the Comcast gateway, and for the Wi Fi client that you are setting up; don't try to use "WPA-Enterprise" or "802.1X" security because that almost certainly will require resources that you don't have (resources such as a security certificate for that connection).Home Edition, etc.): You have now succesfully configured Windows XP to connect to eduroam network.In order to connect to eduroam network in future, simply bring up Wireless Network Connection window by double-clicking its icon in the tray bar , select eduroam network and click on Connect.What's really strange, now I noticed, that this problem is occurring with any Network in range on the list. Without actually looking at the system, it is hard to tell exactly the problem but here are 2 general things to explore: Did you by chance install any of the Comcast utilities on her machine?
I thought that at first, perhaps, a virus and/or malware somehow got by and changed/altered the wireless settings, though the antivirus software and Malwarebytes software is up-to-date and is showing no problems. One of these may be doing strange things with the connection. If that does not work it could be a newtork card driver issue. However, before you do that I would advise you to make sure that you have the driver disc for that netcard (or for the notebook if it is an internal Wi Fi netcard), because Windows will often not have built-in drivers for any given netcard.
When I put the CD in the computer, and after getting the Starting installation wizard message, a software setup screen then comes up with Select components.2 boxes with check marks on them. I told her that if we don't get this darn thing resolved before Sunday night, I'll just return it to Comcast and try another one. If the modem and the computer are within reasonable proximity, connect them with an ethernet cable.
First box says Hardware enabling driver, second box says Software applications. I was happy to see that, when I accessed her wireless network, instead of almost instantly getting the [endless] certificate/Validating routine, I got that familiar opening of the box (Wireless Network Connection) with Type the key, and then click Connect. Disable the computer's wifi adapter and enable the ethernet port and reboot the computer. On the left side you will see "Change order of preferred networks" click on it.
She's always used wireless from the get-go, and in her particular situation/setup, where the cable goes to her entertainment center, it would be impractical to run an extension coax cable as well an an extension AC cord over to the modem.
I did bring over my all-in-one desktop yesterday and checked the direct connection, the Ethernet connection, and at least that works fine.
Self-install kit included the ARRIS model TG 862G/CT Wi-Fi tower modem.