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Troubleshooting Slow Speeds

Many things can cause your internet to slow down. Here are the quickest . If you need further assistance, please contact CenturyLink Internet Support chat.



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  Modem health -
can affect your browsing experience. Here are somethings to try with your modem:
  • 1. Power Cycle: by unplugging the power to your modem modem. Wait 30 seconds. Plug the power back in. Wait [up to 3 minutes] for the INTERNET light to turn solid green.

  • 2. Factory Reset: by holding the reset button [located on the back of the modem] for 10 to 15 seconds. Wait up to 3 minutes for the INTERNET light to turn solid green. This will erase any custom settings (example: port forwarding, or firewall rules).

  • 3. Check for the latest Firmware: by going to the modem firmware page. Firmware updates can fix bugs, add functions and or improve performace.
  Missing DSL filters -
or incorrectly installed filters can ruin your browsing experience. Verify you have plugged in your DSL filters correctly. Then follow the steps located in the DSL filter setup tutorial.
  Poor browser health -
can cause unusual Internet behavior. Doing the following can improve your browsing experience:
  • Reset your browser
  • Restore default settings
  • Delete temporary files
  • Delete cookies
  • Clear history
  • Clear cache
For instructions on how to do this, check the help or support file for your browser, or check the browser support page. If you are using Internet Explorer 6, 7, or 8, try using CenturyLink One Click Fixes. One Click Fixes are used to restore default settings, delete temporary files, and delete cookies.
  Poor computer health -
can ruin your browsing experience To improve your computer health try:
  • PC diagnostic and security scan - is a FREE tool which scans your computer and assesses overall PC health. If issues are found, PC Health Check will offer for resolution options (charges may apply).
  • PC (Tune-up) Optimization - Keep your computer running like a well-oiled machine. Removes items that can cause crashes and freezing (charges apply).
  • Virus, Spyware, Malware Removal - Remove Viruses, Spyware, Adware, Trojans, and worms from your PC (charges apply).
  Bad wiring -
can ruin your browsing experience. You can figure out if the problem is inside or outside your house by testing your service at the NID (dmarc).
  Website Server Speed -
is the available speed of the Web sites you are trying to connect. This will affect the speed you can send and receive information.
  Internet Traffic -
can negatively impact your high speed internet. This is similar to a freeway you drive your car on. You may have a very fast car, but if the traffic on the freeway is slow, it is going to affect how fast your car can go.

More Troubleshooting Tips

Slow Internet speeds? Trouble getting online? Watch this tutorial to find and fix common problems.
This tutorial makes it easy! Troubleshooting slow speeds

Filtering your high speed internet connection is very important. This is because your high speed internet shares the same line as your telephone equipment. If your high speed internet line is not filtered correctly, you may hear static/noise on your phone sets and/or experience a decrease in speed. Learn more about Installing DSL Filters.