AT&T BGW320 Blinking White Light? – (Easy Fix Guide)

Is your AT&T BGW320 Blinking white light? If yes, then you definitely must read this guide! 

First, don’t worry; the white light indicates that your WiFi router is starting or powering up, and it’ll turn solid white when it’s online.

If it keeps blinking for a long time, it needs your attention.

To fix the white light on your BGW320, power cycle the device for up to 10 minutes, and in the meantime, check for service outages in your area. You also verify the electrical source, and factory reset the gateway.

Let’s first discuss the causes of the white-blinking light.

BGW320 White Light Blinking – Here’s Why!

If the service LED blinks white on your AT&T BGW320, your gateway shows it is in a boot process.

If the blinking is continuous, then the BGW320 gateway is unable to load the system.

The white light typically resolves on its own once the gateway fully starts up and connects to AT&T’s network servers.

When ready, the blinking white light should turn to a solid white light.

Sometimes, the white blinking light lasts an extended period on the router, alerting you that something is wrong.

Let’s find out what:

These are the most possible causes of the white blinking light on the BGW320.

Now that we have identified the reasons let’s move further and go over each possibility to help you fix it!

How to Fix the BGW320 Blinking White Light?

Tip: It is recommended to implement each step in consecutive order!

1. Wait for the BGW320 to Boot Up!

Well, before diving into the technical solutions, sometimes all you need is a little patience.

When the BGW320 is blinking a white light, it indicates that your gateway is currently undergoing the boot process.

This is normal behavior unless the LED light continuously blinks for 5+ minutes!

• So, wait at least 5 minutes for the light to turn solid white!

So, patiently wait during this time, and after that, check to see if the router finishes initializing and the light stabilizes on its own.

If the white light appears to be flashing indefinitely, continue reading further!

2. Restart Your BGW320 Gateway

The next step is to restart your modem, which is one of the most effective ways to address the BGW320 slow-blinking white light.

This will allow the device to clear out all temporary glitches, discharge the power supply, and refresh its connection with the AT&T service.

Follow these steps to restart your BGW320 modem:

Restart Your BGW320 – Manually:

1. First, unplug the unit power line from the outlet.
2. Disconnect the wire from the back of the device.
3. Then, remove the battery backup or DL cable. 
4. Wait up to 60 seconds with the wire unplugged.
5. Reconnect everything back in the correct way.
6. Reattach the power cord back to the modem.
7. Wait until the unit reboots and check the light.

Restart Your BGW320 – Using App:

1. First, download the Smart Home Manager app.
2. Log in to the app using your account credentials.
3. Choose Network and Home Network Hardware.
4. Then, select the Wi-Fi Gateway and tap “Restart.”
5. Finally, choose “Restart” to restart your gateway.

Remember that your device takes up to 5-10 minutes to boot up completely and connect to the internet service.

However, if the blinking white light is still apparent, there’s one more thing to do!

Bonus Tip: Plug Your Gateway Directly!

If you are using a surge protector, outlet strip, or extension cable, we highly recommend ejecting any third-party devices from the electrical supply of your gateway.

Plug your gateway directly into the power source or relocate the device and test with a different (working) electrical socket.

Tip: In case of a recent power outage, the A/C line in your home may fluctuate!

3. Check for the Service Outages

Service outages are common and often impact your internet connection with your BGW320, which may lead to the white blinking light. 

As you are still not sure of the root cause, it is a good idea to check the AT&T service status to identify whether there’s an outage in your area.

How to Check the AT&T Service Outages?

1. Open a web browser on your mobile or PC.
2. Navigate to the AT&T Service Outages page.
3. Scroll down to “Find Outages in Your Area.”
4. Then, choose the “AT&T Internet” option title.
5. Insert “Zip Code” and click “Check Outages.”

The tool will identify any service outages in your area or your account, if there are any, there is nothing you can do to solve this at home.

So, remain patient and try again after up to 3 hours.

Tip: You can also check for AT&T outages using the Smart Home Manager mobile app!

4. Reconnect the Internet Cable!

The BGW320 connects with a Fiber or Optic Network Terminal (ONT) cable to provide you with a high-speed internet connection. 

So, when your Gateway service LED is blinking white, a faulty cable connection can be the culprit, which might be causing the blinking white light.

Here is how you can check the AT&T gateway cable connection:

1. Unplug your BGW320 gateway from the power source.
2. Locate the internet cable on the back of the BGW320.
3. Disconnect the internet cable from the Fiber wall jack.
4. Disconnect the other end of the cable from the gateway.
5. Wait 60 seconds while the internet cable is unplugged.
6. Firmly re-insert the internet cable back into the jack port.
7. Reconnect the internet (service) cable to the input port.
8. Lastly, plug your gateway back into the electrical source.

After that, your unit will start blinking a white light, indicating that the startup process is ongoing.

This process may take up to 5 minutes, so remain patient, and when the AT&T gateway is ready, the blinking light will automatically switch to solid white.

Note: Remember to plug the Fiber cable into the SFP port or ONT cable into the ONT port!

Important: Switch the Electrical Socket

Hence, if the white light means that the router is currently starting up, its continuous presence may indicate that the router cannot turn on due to power insufficiency.

Hence, one of the best methods to attempt is to plug the gateway into a different electrical outlet in your home to test.

Tip: Also verify that your BGW320 gateway is not overheating and constantly restarting!

5. Factory Reset Your BGW320

If your BGW320 gateway is still blinking a white light after trying all the steps in this guide, it is time for a factory reset.

This is an ideal and effective workaround to any issue with the device. 

However, this method will erase all data from your BGW320, including your WiFi, passwords, and all other saved and configured settings.

Note: Make sure to note down your router’s IP address or WiFi SSID’s name!

Here is how to factory reset your AT&T gateway in easy steps:

1. Ensure the gateway is connected to power and turned on.
2. Connect the gateway to the computer via an Ethernet cable.
3. Then, locate the “Reset button” on the back of the BGW320.
4. Press the red Reset button for 15 seconds, and then release.
5. Head over to your computer and open any online browser.
6. Then, enter the router’s static IP address into the search bar.
7. Info: Insert “https://192.168.1.1/” into the URL of the browser.
8. Tip: Use admin/admin or admin/password as login details.

Remember that if you hold down the reset button on your BGW320 gateway for less than 10 seconds, it will only reboot, but it won’t reset to the default settings.

You will know that the AT&T gateway has been reset when the WiFi networks disappear or have different names.

Tip: If you need more help with troubleshooting or replacement, contact AT&T Support!

Quick Recap:

Hence, when your BGW320 blinks white light, first wait for up to 5 minutes to verify that the white light will blink indefinitely.

Then, restart the BGW320 gateway, check for service outages in your area, reconnect the internet cable, or perform the factory reset process!

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