Frequently Asked Questions - APIPA

FAQs - APIPA
Here you will find questions and answers to common networking topics.
My laptop has a wireless connection but when I go to Internet Explorer it says searching for proxy settings and then “page cannot be displayed”

Are you sure your wireless connection is working? Even though you are connected to the router your computer may not be getting the proper IP settings from the router. If you right click the wireless connection in the taskbar by the clock do and select View available wireless networks do you see your router in the list?

If you are making a connection to the router you should next check your IP settings. Go to Start, Run and type in cmd and click Ok. Then type in ipconfig /all and make sure there is a number such as 192.168.0.100 for the IP Address section. If its all zeros or a number that starts with 169.254.x.x then you are not getting the IP information from your router.

If you are getting a correct IP address then you should check your and then click on Setup. Follow the prompts and check the right information. You most likely do not have any proxy settings to fill in so have Internet Explorer do it automatically.

An additional test to see if you have internet connectivity is to go to Start, Run and type in cmd and click Ok again. Then type in ping www.google.com and see if you get a reply. If so then you have connectivity to the internet and its most likely a browser or firewall setting. If not then you do not have connectivity and may want to contact your internet provider.

My computer is telling my the network cable is unplugged but it is plugged in. What do I do? Is it a virus?

It's unlikely that a virus is affecting the physical port itself but may be doing something to block access to the port. Since you are getting an APIPA IP address (169) then your computer is not able to talk to your DHCP device. I would boot into Safe Mode with networking and see if you can get a connection/IP address that way since many virus and spyware programs don't start up in Safe Mode.

If you know the IP address and subnet mask of your network or if you have another computer connected to check the settings then you can assign a static IP address and see if you can communicate that way.

You can also go into Device Manager and remove the network card, reboot and have Windows find it and reinstall it to see if that helps. Finding and installing a new driver may be helpful as well.

Another way to check the port is to check the link light on the other end of the connection. If a connection is being made and packets are being send then you should get the link lights on the other end of the connection such as your router or switch to light up even if your computer doesn't have an IP address. If the link light on the other end is not lighting up then you may have a faulty Ethernet card itself.

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