Error 769 when try to connect to the Internet

Error 769 when you try to connect to the Internet through Airtel mobile office. I called Airtel customer care but they didn't help me can someone help me ?

Thanks

you receive these error messages when one of the following conditions is true:

• A network cable is disconnected.
• The modem has been disabled.
• The modem drivers are corrupted.
• Spyware is running on the computer and is interfering with the connection.
• Winsock has to be repaired.
• Third-party firewall software is blocking the connection.

Make sure that the network cable is connected to the computer and to the modem. If your computer connects to a hub or to a router, make sure the cable that connects the hub or the router to the modem is connected.

Make sure that the network adapter is enabled.

1. Click Start, click Run, type ncpa.cpl, and then click OK.
2. Right-click the Local Area Connection icon. Click Enable if the option is available.