I googled "wireless connection showing enabled and no Internet", as I had never before encountered that problem. A blog entitled, Repair and reset Windows Vista TCPIP Winsock Catalog Corruption popped up and described the situation. It was easy and solved the problem in five short steps. Be sure to click on the link for an explanation as to what caused the Winsock corruption. This fix could save you a lot of potential headache. Here is the Microsoft Knowledge Base article for How to determine and to recover from Winsock2 corruption in Windows Server 2003, in Windows XP, and in Windows Vista.
Determine whether the Winsock key is infected:
3. Press Ctrl-Shift-Enter keyboard shortcut to run Command Prompt as Administrator. Allow elevation request.
4. Expand Components, Expand Network, Click Protocol
5. Ten sections appear under Protocol. The following names will appear in the headings if the Winsock2 key is undamaged:
Determine whether the Winsock key is infected:
1. Click on the Start button.
2. Type Cmd in the Start Search text box.
4. Expand Components, Expand Network, Click Protocol
5. Ten sections appear under Protocol. The following names will appear in the headings if the Winsock2 key is undamaged:
If the names are anything different from those in this list, the Winsock2 key is corrupted, or you have a third-party add-on such as proxy software installed.
If there are more than ten sections in the list, you have third-party additions installed.
If there are fewer than ten sections, there is information missing.
To resolve the issue in Windows Vista, do the following:
If you have a third-party add-on installed, the name of the add-on will replace the letters "MSAFD" in the list.
1. Click on the Start button.
2. Type Cmd in the Start Search text box.
3. Press Ctrl-Shift-Enter keyboard shortcut to run Command Prompt as Administrator. Allow elevation request.
4. Type netsh winsock reset in the Command Prompt shell, and then press the Enter key.
5. Restart the computer.
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