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Virus Removal Success, Internet Still Down


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#1 Kcalbris

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Posted 18 February 2010 - 08:26 PM

Okay, so my buddy, a local business owner and dear family friend, got the word out that he had a computer problem.

He thought he'd need a fresh install.

He could boot up, but he had 5 major viruses.

(Excuse the following, as I particularly HATE Vista, with a passion, and I'm particular to XP and Linux... So I'm going to have to describe this as best I can.)

When a program requires administrative privileges, it prompts for an admin. password. If the admin has no password, one simply presses "continue" or some similar button, to grant privilege and continue on with the program.
That consent program was one of the files infected...

So, I had the file cleaned, cleaned all traces of the 5 viruses in registry, within any folders, etc...

The computer is almost guaranteed 100% clean.

HJT had nothing special to tell me, jus the basics.

Malwarebytes and a few other good n free antivirii programs had nothing much to say, either. (Avast, Avira, SuperAntiSpyware, Malwarebytes, Security Task Manager, and HiJackThis were used).

Well, I finish up, restart the computer, and load up IE (yes, he still uses Internet Explorer. This is the next problem I intend to tackle - he'll be on FireFox when I'm done with him:P)

But anyways,
IE fails to load a page.
I made sure he wasn't attempting to browse through a proxy.
I tried putting the security on IE down to zero - now there's no security, but nothing blocking sites from loading.
Still nothing.
I hit the button that attempts to diagnose the problem ... Said no problems were found.
He has Verizon, and it's connected.

So, I pull out CMD.exe and attempt to ping a few websites - all turn out good.
I checked the Hosts file, perfectly fine. Nothing added, whatsoever (Well, it's set to default, like a clean install)...

What would allow us to be online, ping people's websites (Such as Google and Micro$oft), but not allow us to connect to the internet?

I then installed Firefox onto his system - fail. Installed perfectly, ran perfectly, loaded websites exactly the same - (not at all.)

I'm exceptional with software and even most hardware issues, but I'm only so good when it comes to a network issue.
I have no idea why I can ping and can't browse.

Anyone with any ideas?

Windows Vista SP2.

Thanks ahead of time.

-Jake Black.

[EDIT]

P.S., all firewalls disabled.
Even disabled antivirus programs.
There shouldn't be any software interfering.
And yes, the internet worked fine before the viruses infected his Vista Laptop.

Many thanks, once again.

[EDIT2]
P.S.S.,
He's running a Verizon 3G wireless network linked to his cellular phone.

Edited by Kcalbris, 18 February 2010 - 10:03 PM.


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#2 garmanma

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Posted 18 February 2010 - 09:13 PM

Don't forget to check and see if the proxy server box is unchecked in Internet Properties


Log on as an administrator, go Start > Run and type: "cmd". In the window that appears type: "netsh winsock reset". When the program is finished, you will receive the message: "Successfully reset the Winsock Catalog. You must restart the machine in order to complete the reset." Close the command box and reboot your computer.

Go Start > Run > type: "cmd" In the window that appears type: "ipconfig /flushdns". Close the command box.

Go Start > Control Panel > Network Connections. Right click on your default connection, usually Local Area Connection or Dial-up Connection if you are using Dial-up, and and choose Properties. Double-click on the Internet Protocol (TCP/IP) item. Select the radio button that says "Obtain DNS servers automatically". Reboot.

Warning: Some Internet Service Providers need specific DNS settings. You need to make sure that you know if such DNS settings are required before you make this change.
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#3 Broni

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Posted 18 February 2010 - 10:32 PM

If "ping" works, but browsers don't, there is still a chance, that the computer is not 100% clean.

My Website

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My help doesn't cost a penny, but if you'd like to consider a donation, click p22001735.gif


 


#4 cryptodan

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Posted 19 February 2010 - 04:22 PM

Can you show us the results of ipconfig /all when you enter that in the cmd prompt window?

How are you pinging the sites by name or by ip?

try this:

ftp://anon:123temppasswd123@cryptodan.net...loads/ff_36.exe

in command prompt type ftp cryptodan.net or ftp 173.73.4.107

anon for username
password = 123temppasswd123

cd to downloads

get ff_36.exe

Install it and try it.

You will then have firefox.

Edited by cryptodan, 19 February 2010 - 04:29 PM.


#5 dunphy

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Posted 19 February 2010 - 04:38 PM

im having the same exact problem on a different computer




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