I recently had problems with my Ethernet internet connection. I got admission in University of Cyprus and I am staying in dorms. It is great here, but my only problem is that I couldn’t connect to the internet through Ethernet cable. I Called University Apartments Technics Team, and after they run some basic tests they come to conclusion that the port and the Ethernet cable was alright! So I took my computer to the Computer Store, because I thought that my PC was broken. They told me that my PC was totally functioning, my friend brought his Getaway laptop with windows 8 and he was connected fine. Fun thing is that every weekend when I go home, I connect my laptop to the internet through Ethernet cable and it is working just fine. And the same thing happened in the Computer Technical store. But for some unknown reason the internet wouldn’t connect in the Apartments! I reinstalled the drivers, I run ipconfing /all in the CMD and the Physical Address under Ethernet was 00-00-00-00-00. Then I run ipconfig /release and ipconfig/renew. Without any luck! I found in internet a program that is randomly changing the MAC Address of the computer but I had no luck there either.
But after some time I had an amazing idea! And I fixed the internet connection issue for ever. So I want to share this idea with you!
NOTE: I am not a professional computer engineer so I don’t know further stuff about this issue, and I don’t guarantee that this will work for you!! But it worked for me and I just want to share it with you!
Here it is what I have done:
1) Run CMD
a. You can click Windows key + R and type “CMD”
b. Or you can find it from the start menu by typing CMD
After CMD comes up, type “ipconfig /all” and hit ENTER
A list of internet connections and it’s details will pop up. Assuming that you have the problem, find the “Ethernet adapter Ethernet:” line and under it you should see “Physical Address. . . . . . . . . : 00-00-00-00-00-00”
That means that you don't have an internet access.
(I don't have 00-00-00... because i fixed already the internet issue)
But in your condition!
To fix that, what I did was:
I connected thought the Wifi to the University’s WiFi
RUN CMD again and type again ipconfig /all.
This time search the line that shows details about Wireless connection. My line is called: “Wireless LAN adapter Wireless Network Connection:” I think your supposed to be the same.
Under this line you should see “Physical Adderss:” and 24 digit number like 0F-45-A4-…..
Copy that number only!!!! (right click on the black section of CMD and choose “MARK”, highlight the number and then hit ENTER to copy)
Open a notepad and past it there
Delete the “-” between the numbers.
Now go to start. Type “Administrative Tools”, click on “Settings” under the search box if you are using Windows 8 and then click on the Administrative Tools to open it!
Open “Computer Management”
Open “System Tools”
Open “Device Manager”
Click on “Network Adapters”
Right click on your Ethernet driver name (Mine is “Realtek PCIe GBE Family Controller”)
And select “Propertise”
Click on “Advanced” tab
From the list find the “Network Address”
Under value click the dot near the box
I don’t know what is written in this box, but for your safety copy the box’s content, past It In a new Notepad file and save it as “Network Mac Address Backup”. So if for some reason this will not help you, you will be able to restore the original settings.
NOW!! Final step
Go to the first notepad where we copied our Wifi’s MAC Address and deleted the “-”.
Copy that characters and past them into the box of your Ethernet’s Driver Properties!!
Close all unnecessary windows!
Now disconnect your Wi-Fi network and try to open Internet Explorer or Google Chrome!!
After that my internet connection was working just fine!!!