Hi,
Welcome to Windows Vista Answers community.
It sounds like your Network adater is not working or you do not have the right driver for your Network Adapter.
For more information refer this link.
First, let us check if the Network Adapter is enabled or not.
To enable the adapter:
- Open Network Connections by clicking the Start button , clicking Control Panel, clicking Network and Internet, clicking Network and Sharing Center, and then clicking Manage network connections.
- Right-click the network adapter icon, and then click Enable. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
Reset the adapter:
- Open Network Connections by clicking the Start button , clicking Control Panel, clicking Network and Internet, clicking Network and Sharing Center, and then clicking Manage network connections.
- Right-click the network adapter icon, and then click Disable. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
- Right-click the adapter icon again, and then click Enable. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
The adapter is now reset. Try connecting to the network again, or run Network Diagnostics to verify that your network adapter is now working correctly.
Open Network Diagnostics by right-clicking the network icon in the notification area, and then clicking Diagnose and repair.
If you reset your network adapter and you still can't connect to a network, you might need to update the adapter driver. (Updating the driver can solve the problem of missing or failed drivers, as well as outdated ones.) To update your network adapter driver,
follow these steps:
- Open Device Manager by clicking the Start button , clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
- Double-click Network Adapters, right-click your adapter, and then click Properties.
- Click the Driver tab, and then click Update Driver.
If Windows cannot find the driver on your computer and you do not have a connection to the Internet, you might need to contact the network adapter manufacturer or your computer manufacturer to get the driver. Check the information that came with your network
adapter or your computer to see if you have a disc that contains the drivers.
For more information refer this link:
http://windowshelp.microsoft.com/Windows/en-us/help/555cea69-145e-4ab7-a226-76d8c0ee16d31033.mspx
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357
How to determine and to recover from Winsock2 corruption in Windows Server 2003, in Windows XP, and in Windows Vista
http://support.microsoft.com/kb/811259
Regards,
Amritha- Microsoft Support.