How to Fix CenturyLink Internet Not Working – Troubleshoot Slow WIFI or DSL Modem

In our increasingly connected world, having reliable internet access has become a necessity. CenturyLink is a popular internet service provider that offers a range of high-speed internet plans to cater to various needs. However, like any technology, CenturyLink users may occasionally run into issues such as their internet not working or their WiFi failing to connect.

This can be frustrating, especially when there is important work to be done or your favorite show to watch. Thankfully, there are several troubleshooting steps that you can take to resolve these issues and get back online.

In this article, we will guide you through various solutions to fix CenturyLink internet connectivity problems, empowering you to resolve issues by yourself and avoid downtime.

Let’s dive in and explore the steps to restore your CenturyLink WiFi connection and enjoy uninterrupted internet access. 

Troubleshooting Your CenturyLink Internet Connection

When it comes to diagnosing and fixing a CenturyLink internet issue, there are several different steps you can take. Let’s go through them one by one.

1. Check Your Modem and Router

The first step in troubleshooting any internet issue is to check your modem and router. Take a look at the modem and router lights and make sure they are all lit up correctly.

Depending on your modem or router model, there may be an array of colored lights that indicate various states such as power, wireless connection, DSL connection, etc.

Make sure these lights appear normal (i.e., not blinking). If any of the lights are off or blinking incessantly, then there may be a hardware issue that needs to be addressed before any other steps can be taken.

2. Reboot Your Modem and Router

If everything looks normal in terms of the modem and router lights, then it’s time to reboot both devices.

To do this, simply unplug both the modem and router from their power sources simultaneously and wait 30 seconds before plugging them both back in again.

Once they have restarted fully, check the light array again to make sure everything is still looking normal.

If yes, move on to the next step, if not you’ll need to call in a technician who can address any hardware issues directly.

3. Reset Your Router to Factory Settings

If rebooting your modem/router doesn’t resolve the problem, then try resetting your router back to its factory settings.

This can be done using either a reset pinhole button located on the back/bottom of most routers or via software depending on which type of router you have (e.g., Linksys).

Resetting your router will erase all prior configuration settings so be sure that after doing so that you know how to reconfigure it properly for optimal performance (if needed).

4. Check the Cables and Connectors

The next step is to check all cables/connectors related to your internet setup including Ethernet cable(s), coaxial cable(s) as well as power cords associated with each device connected (modem/router).

Make sure all connectors are firmly seated into their respective sockets/ports with no signs of damage or corrosion on either end of each cable/connector being checked (this may require purchasing replacement cables if necessary).

Also ensure that no cables/connectors are being pinched between devices or furniture etc., as this can cause connectivity issues as well.

A. Check the Ethernet Cable and Plug

Start by checking all Ethernet cables first since those are used primarily when connecting computers directly via hardwired connections rather than relying solely on wireless connections only (which we’ll cover shortly).

As mentioned above double-check each cable for loose connections on either end as well as any visible signs of physical damage such as fraying or exposed wires etc..

Replace any damaged cables if found during this process using new Cat5e or Cat6 compatible cables depending upon what type was previously used.

Cat5e is recommended for most applications but some networks may require six instead for optimum performance due to distance limitations associated with Cat5e cabling.

B. Check the Coaxial Cable and Connectors

If using coaxial cabling from a wall outlet directly into either an external splitter box (if present) or directly into either a modem or router then also double-check these connections,

This is to ensure that they are also properly seated into their respective ports with no signs of corrosion present anywhere along their length (including splitter boxes etc.).

Additionally, verify that no other splitters have been inserted between the main splitter boxes installed by the service provider(s). This can reduce signal strength significantly over time leading to possible slowdowns in internet speed when accessing certain websites etc.

Replace damaged coaxial cabling if necessary before proceeding further with the troubleshooting process outlined below:

Verify Wi-Fi Connection on Your Device

Now let’s switch gears from hardwired connections into wireless ones since many people rely exclusively upon using wireless access points around their homes now rather than relying solely upon hardwired ones only.

This is mainly for convenience purposes, particularly due to the lack of physical mobility associated with running long lengths of networking cable throughout rooms, etc.

When checking wireless connections, first verify whether the device being used is capable of broadcasting and receiving signals at the 5GHz frequency band, which often provides faster speeds than the 2GHz band when available in the area.

Otherwise, proceed normally following the instructions below:

Connect To Wi-Fi Network Manually On Your Device

Connecting to a Wi-Fi network manually on your device can be done in a few simple steps.

  • Make sure that you have the network’s name and password on hand.
  • Turn on Wi-Fi on your device and select the network from the list of available networks.
  • Enter in your password when prompted and wait for your device to connect.
  • Once connected, you can now access the internet through this network.

Keep in mind that some networks may require additional settings or authentication before allowing access so always check with your service provider first if necessary. 

Frequently Asked Questions To Fix CenturyLink Internet

How do I reset my CenturyLink modem?

To reset your CenturyLink modem, locate the “Reset” button on the back of the device. Press and hold this button for 10-30 seconds until the power light starts to blink or turn green.

This indicates that the modem has been reset to its factory settings.

What should I do if my CenturyLink Wi-Fi is not working?

If you are having trouble connecting to your Wi-Fi network, try restarting your router or modem and checking that all lights on the modem are turned green.

You can also check to see if other devices such as smartphones can connect to the wifi successfully.

If none of these steps work, contact CenturyLink customer service for help.

Why is my internet light blinking red and green?

A blinking red and green light may indicate that there is an issue with your connection. Try rebooting your modem and checking for outages in your area.

If none of these steps resolve the problem, contact CenturyLink support for further assistance.

How do I troubleshoot CenturyLink DSL connection issues?

To troubleshoot CenturyLink DSL connection issues, start by making sure all cables are securely connected from the DSL port on the hub/modem to the wall jack as well as from the Ethernet port on the hub/modem to the computer/device (if a wired connection is used).

Make sure no obstruction is blocking signals like walls etc. Check with the service provider about any outages in your area which may be causing problems with a stable internet connection.

What should I do when my CenturyLink internet keeps disconnecting continuously?

When experiencing frequent disconnection issues with CenturyLink internet try restarting both router/modem and computer/device.

Also, make sure no other connected devices such as smartphones, etc., have been interfering with bandwidth usage while online.

You may also want to check with the service provider about any potential outages in your area which could be causing problems.

How to fix CenturyLink internet red light?

When encountering a red light on your CenturyLink internet, your first step should be to check that your equipment is properly configured and your modem isn’t being filtered. If the problem persists, attempt to restart your modem.

Nevertheless, if the DSL light on your modem remains off, flashing, or red for an extended period, it may indicate a network issue. In these situations, it’s advisable to contact a CenturyLink representative for additional assistance in determining the underlying cause of the problem.

By working with their team, you can effectively address any complications and quickly restore your internet connection for uninterrupted use.

How long does CenturyLink take to restore the internet?

If you’re curious about the amount of time it takes for CenturyLink to restore your internet service, regardless of whether you opt to make payment through online means or via phone, you should expect to wait no more than 24 hours for the reconnection to occur.


Resolving CenturyLink internet connectivity or WIFI-related issues can be achieved through multiple troubleshooting steps. Users may consider restarting their modem and devices, checking connections, repositioning the router, and even updating the firmware.

Additionally, contacting CenturyLink customer support for further assistance or opting for technical help in more complex situations could prove highly beneficial.

It is essential to follow these steps systematically and maintain proper care of the equipment to ensure a hassle-free internet experience and maximize the functionality of your CenturyLink service. 

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