Why Does My Windows 7 Computer Not Connect to the Internet Using the DSL Cable But It Works with WiFi and with Dial Up?



Recently my husband helped a relative who was setting up a new laptop computer. One of the most puzzling problems was getting the Windows 7 machine to connect properly to the internet. It would connect fine at a location using WiFi. It had no trouble connecting via dial up networking once the proper settings were typed in. However, surprisingly the computer could not connect to the internet when a DSL cable was plugged into it!

To add to the confusion, the settings were as close as possible to those used on a Vista laptop that could connect with no problem. So what was causing the error?

Do All Win 7 Machines Have Trouble with DSL Connections?

No.

The problem in this case arose because of the software being used by the internet service provider. To use DSL with this ISP required changing a setting on the laptop.

How to Correct a Win 7 Computer’s Settings to Allow It to Use DSL to Connect to the Internet

The internet protocol IP V6 setting needed to be disabled.

This will not fix all computers running Windows 7 trying to connect to the internet via DSL, but it is a solution for some computers. Please make sure you know exactly what you are doing before you follow these instructions, or find someone who does to help you!

To Disable IP V6 for a Win 7 Computer to Use DSL

  1. From the Start Button select Control Panel.
  2. Click on Network and Internet.
  3. Click on Network and Sharing Center.
  4. Click on Manage Network Connections.
  5. Right click on the Your-Internet-Service-Provider Connection; it will likely have PPPoE in the description, and select Properties.
  6. Click on Continue.
  7. Look for Internet Protocol Version 6 (TCP/IPv6)
  8. Click to remove the check mark beside that item.
  9. Click OK.
  10. Close the windows.

You should now be able to connect using your DSL cable.


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