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"Ethernet" doesn't have a valid IP configuration

Discussion in 'Networking (Hardware & Software)' started by Xuzuno, 2013/03/16.

  1. 2013/03/16
    Xuzuno

    Xuzuno Inactive Thread Starter

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    Hi,

    I'm using an ethernet cord to connect to my internet and it has been working well until Thursday morning when I turned on my laptop (Windows 8) to see a yellow triangle sign in the bottom right hand corner, in front of the ethernet connected symbol. Since then I haven't been able been able to access the internet from my computer. When I hover over it, it says that it is an "Unidentified network" and there is "No internet access ". I've run the Windows 8 troubleshooting and it says that the problem found was " "Ethernet" doesn't have a valid IP configuration ", but I'm unsure how to fix it.

    I'm thinking that the problem is to do with my computer rather than my network, because I've tried another laptop (Windows 7) through the same ethernet cable and connection and the internet works fine on the other laptop. I've tried so many fixes that I've found online, with none of them actually working. Yesterday I even tried a full system reset, where I reinstalled Windows 8, repartitioned and wiped everything off the hard drive, but it still appears have the exact same problem.

    Today I also purchased and tried a new ethernet cable which didn't work, so I then purchased a USB to Ethernet adapter, to make sure that it wasn't my ethernet port on my laptop that was faulty. That didn't work either, and the same problem still remains.

    I feel like I've tried everything, so can someone please help me?

    Thanks in advance,
    Xuzuno
     
    Xuzuno,
    #1
  2. 2013/03/16
    TonyT

    TonyT SuperGeek Staff

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    Do this:

    1. unplug ethernet cable from comp.
    2. open network & sharing center.
    3. on left side > change adapter settings.
    4. right click ethernet > select properties.
    5. uninstall QoS.
    6. uncheck internet protocol version 6 (tcp/ip)
    7. double click internet protocol version 4 (tcp/ip.
    8. click advanced button > wins tab.
    9. uncheck enable lmhosts lookup.
    10. set to: enable netbios over tcp/ip.
    11. OK button to close all dialogs.

    Next:

    1. go to Metro screen > right click > all apps > locate command prompt & right click > at bottom select "run as administrator ".
    2. type each command and press the enter key:
    ipconfig /flushdns
    ipconfig /release
    3. shutdown comp > connect network cable > start computer.

    If still no connections, do this:
    1. open an administrator command prompt again.
    2. type this command & press enter key:
    ipconfig /all > C:\Users\your-username\Desktop\network.txt
    (replace your-username with your actual user name)

    There will now be a file on your desktop called network.txt. Get that file onto a computer that works, open it and post its contents here so we can see it.
     
    TonyT,
    #2


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  4. 2013/03/16
    Xuzuno

    Xuzuno Inactive Thread Starter

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    Hi TonyT, thanks for you reply. I followed the steps you outlined in your post, but unfortunately it still has the same problem. Here is the output of ipconfig /all:

     
    Xuzuno,
    #3
  5. 2013/03/16
    TonyT

    TonyT SuperGeek Staff

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    Thanks.

    Now, what kind of Internet service do you have? Who is the ISP? And are you using a modem and/or router?
     
    TonyT,
    #4
  6. 2013/03/16
    Xuzuno

    Xuzuno Inactive Thread Starter

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    Thanks for your reply again TonyT. I'm actually living in a student accommodation, so the internet is provided through the university network. I just connect an ethernet cable from my laptop to the ethernet port on the wall. It usually works just fine, except since three days ago when this problem started happening.
     
    Xuzuno,
    #5
  7. 2013/03/16
    TonyT

    TonyT SuperGeek Staff

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    I would ask the IT guys at the university. There's the possibility that for some odd reason your computer is blocked by their router, its mac address may be filtered.

    onnection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
    Physical Address. . . . . . . . . : B8-88-E3-E6-98-B6
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Autoconfiguration IPv4 Address. . : 169.254.63.184(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.0.0
    Default Gateway . . . . . . . . . :
    NetBIOS over Tcpip. . . . . . . . : Enabled
     
    TonyT,
    #6
  8. 2013/03/17
    Xuzuno

    Xuzuno Inactive Thread Starter

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    Okay, thanks TonyT. I'll talk to them tomorrow, I'll let you know how it goes.
     
    Xuzuno,
    #7
  9. 2013/03/17
    TonyT

    TonyT SuperGeek Staff

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    It may be that the IT dept has set bandwidth limits per pc and most likely monitors P2P, file sharing and torrent connections.

    Meanwhile, try connecting by wifi via someone's access point. It's very likely some student has an access point up & running.

    To determine if your mac address (wired) is blocked, connect by wire via a different network elsewhere, such as at someone's home.
     
    TonyT,
    #8

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