Untangle your cables and cordsfor an explanation of what to do. (If you're you trying to fix a problem with your wireless, read )
Avoid common setup mistakes
Restart, reboot and verify
Improve a low-quality connectionIf you can connect to the Internet, but the connection drops or is slow, consider these recommendations.
Connection dropsand How to properly connect a landline phone through the same wall phone jack as the modem to learn more. You might also look at .
Slow connectionIf think your Internet connection is slower than it should be, you can run a speed test to confirm your suspicions. Read for step-by-step instructions.
Source : http://www.centurylink.com/