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No Internet Access- Both wired and Wirelessly

Discussion in 'Networking' started by pcshooter, Dec 1, 2011.

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  1. pcshooter

    pcshooter Thread Starter

    Joined:
    Dec 1, 2011
    Messages:
    1
    Hi,

    I ran into trouble with rootkits and trojans and had to clean them using combofix. After which, my ESET Nod32 failed. I uninstalled it and rebooted my Laptop.
    The rootkit had entered my TCP/IP stack and I suspect something hasn't been fixed there, yet.

    After the reboot, I can connect using wireless and/or wired to my Router, but I can't browse. It tells me there's 'No Internet Access' when I hover the mouse over the network icon on the system tray.
    I have tried flushing my dns, reseting the WinSock, repairing TCP/IP.

    Nothing works.


    When I ping for yahoo/google.com, it tells me "ping request could not find host yahoo.com. Please check the name and try again.".

    Something tells me it is a DNS issue, but I can't figure out how to resolve it.


    Additional Information:

    OS: Windows 7 Home 32-bit SP1
    RAM: 4GB
    Wireless Adapter: Atheros AR9285 802.11 b/g/n
    Ethernet Adapter: Realtek PCIe GBE Family Controller

    I've done a million reboots and it won't work. Also, my ESET Nod32 4 will not re-install. It tells me the 'Installation Ended Prematurely'. The same happens even after I uninstall all AV products using Nod32 Removal utility from the Safe mode.
    Same when attempted to install ESET Nod32 5.

    Help!!
     
  2. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,413
    First Name:
    Wayne
    would you do another tcp/ip reset and post the results here - see below
    also make sure no proxy set
    then do the following tests ipconfig /all and three ping tests - see below

    ------------------------------------------------------------------------

    Remove any proxy settings
    Check your browser's settings, remove or uncheck any proxy settings if found
    http://www.library.kent.edu/page/14299
    http://www.ehow.com/how_5512742_remove-proxy-server.html

    ------------------------------------------------------------------------


    ------------------------------------------------------------------------
    ipconfig /all
    If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post results here

    We would like to see the results from ipconfig /all post back the results in a reply here

    Hold the Windows key and press R, then type CMD then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):

    In the command prompt window that opens, type the following command:

    Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

    ipconfig /all > network.txt & network.txt

    It will export the results to notepad and then automatically open notepad.

    Now all you need to do is copy and paste those results to a reply here
    to do that:
    From the notepad menu - choose Edit - Select all
    all the text will be highlighted
    Next
    From the notepad menu - choose Edit - Copy
    Now go back to the forum - reply and then right click in the reply box and paste
    ------------------------------------------------------------------------

    ------------------------------------------------------------------------
    Ping Tests
    If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post results here

    Start> Run {search bar in Vista/W7}> CMD to open a DOS window and type:

    Type the following command
    Ping {plus the number thats shown against the default gateway shown in above ipconfig /all}
    Post back the results
    rightclick in the box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste

    Type the following command
    Ping google.com
    Post back the results
    rightclick in the box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste

    Type the following command
    Ping 209.183.226.152
    post back results
    rightclick in the box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste

    ------------------------------------------------------------------------

    ------------------------------------------------------------------------

    TCP/IP stack repair options for use with Vista/Windows 7

    Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.

    Note: Type only the text in bold for the following commands.

    Reset WINSOCK entries to installation defaults: netsh winsock reset catalog

    Reset IPv4 TCP/IP stack to installation defaults. netsh int ipv4 reset reset.log
    and press enter

    Reset IPv6 TCP/IP stack to installation defaults. netsh int ipv6 reset reset.log
    and press enter

    Reboot the machine.

    If you receive the message
    The requested operation requires elevation.
    Then please open the command prompt as administrator - as requested above
    Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.

    Please note and post back - if you receive the message
    Access is Denied

    Post back the results here - we need to know these commands worked correctly
    rightclick in the box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste

    ------------------------------------------------------------------------
     
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