Connected to wireless modem but no internet access
Facts - Other software technologies
Sunday, 16 January 2011 20:09

I switched from a wired adsl modem to a wireless adsl modem. It was all easy to set up, under Windows 7 and the computer got connected to the modem. The problem was that Windows 7 reported No internet access for the wireless connection. When I connected the computer and the modem with a cable the internet access was OK.

It turned out that about a year ago I had to use the wireless connection somewhere else and at that location it had been necessary to preset the IP address of the DNS server. So I opened the Network and Sharing Center in Windows 7. Then I clicked on the wireless connection. In the new window I clicked the button Properties. In the properties window I selected Internet Protocol Version 4 (TCP/IPv4) and clicked again on a button Properties. In the new (second) properties window I selected Obtain DNS server address automatically and clicked OK. That solved my wireless connection problem.

It took me a while to find the cause of the problem. Next time I will first lookup the IP address of the DNS server, with the command ipconfig /all, and then ping this ip address.

After fixing this problem I realized that I had the same problem a couple of weeks ago, when I used a wireless router instead of a wireless adsl modem. After being connected through a cable I sometimes have to reset the DNS server configuration again from fixed IP address to obtaining it automatically.