For the computer, it's under the Wireless Network Connection to Configure (the card)...don't know where it is for Vista. It's the Advanced tab, but that's AdHoc, so here it makes no difference. Scratch that idea.
See in your settings if your encryption settings have changed. Your Wireless Network, Properties, Association tab.
I am set for TKIP, but it has (and is now as a matter of fact!) changed to AES.
WHY, no clue, but have had that be a reason why I can't connect.
Settings change automatically in Win sometimes, I know it's not supposed to happen, but it does, I've seen it (not just Wireless); of course, I'm the poster child for computer problems.
RCSMG wrote:
spd2demun wrote:
I know this will sound dumb, but see if the Wireless Channel changed itself (or ATT did a little remote change). I had it happen twice and know I didn't do it.Right now the wireless channel is 6 (2437Mhz). I tried locating the channel on the laptop. I haven't found it yet. When I reboot the computer it is able to connect to the internet again. ATT changed the channel rebooting the computer wouldn't automatically change the wireless number. Or am I wrong?
The best solution when encountering this problems is through changing the wireless channel on the Residential Gateway to a channel other than what is currently selected. Channels 5 and 6 are recommended; however, you will have different circumstances and another channel may work better.
http://utalk.att.com/utalk/board/message?board.id=
Another thing is physical barrier may caused this sudden change in connectivity. The environment that a Residential Gateway is in can greatly affect the range and strength of the signal it produces. A physical barrier is an object or material that is too dense for radio waves to pass through. If such an object is directly between the Residential Gateway and the wireless computer, signal degradation can occur. Some examples include the following:
- Basements
- Concrete or metal walls (normally only found in industrial areas)
- Steel or aluminum framing
- Breaker boxes
- Stucco (plaster on chicken wire)
- Wall aquariums
- Large or medium appliances:
- Refrigerators
- Washing machines
- Dryers
- Microwave ovens
For optimal performance, the Residential Gateway should be placed in an open environment at a moderate elevation (shoulder height) and away from other electronic devices.
I'm not sure if that make sense to you but I'm just trying to help. 
RCSMG wrote:
This may have already been posted about. As of Friday my wife's laptop loses it's ability to connect to the internet. The message says "Wireless detecion excellent with limited connectivity". If I soft boot the laptop it is able to connect again. Nothing was changed on the laptop. I have run scans for viruses and spyware. Any help is appreciated.
Trees and shrubs have also been known to suck up wireless signals, as well as UFO's. 
RC, did you ever get it fixed/connected?
spd2demun wrote:Trees and shrubs have also been known to suck up wireless signals, as well as UFO's.
RC, did you ever get it fixed/connected?
The problem went away almost as suddenly as it started. I don't know why, I didn't do anything. I just decided to give it a few days since I had heard phase 2 had begun rolling out. Maybe it was maint or something.
