No Internet Access- Both wired and Wirelessly

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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!!
 

etaf

Wayne
Moderator
Joined
Oct 2, 2003
Messages
65,487
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

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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

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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
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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
For your information only
these tests will check various stages of the connection, the first ping test, ping default gateway checks to see if you still have a connection to the router the next two
Ping google.com & Ping 209.183.226.152 tests the connection to internet , one by name and one by number which checks that the dns is working

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

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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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