First try power cycling your modem. Just unplug the power cord from your modem, leave it unplugged for 15 seconds, plug the power supply back into the modem, wait a minute and then retry connecting to the Internet.
If that doesn’t work, try power cycling your router (if you are using one). Unplug the power cord, leave it unplugged for 15 seconds, plug the power supply back into the router, wait a minute and then retry connecting to the Internet.
If that doesn’t work, try restarting your computer.
If that doesn’t work, call South Central Technical Support. Please be at your computer with it turned on when you call.