Re: cannot access internet
From: Malke (malke_at_nospoonnotreally.com)
Date: 08/02/04
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Date: Mon, 02 Aug 2004 05:58:24 -0700
buceee wrote:
> some how a virus was downloaded to my main computer and
> will not allow me access to the internet. I have a laptop
> that is broadband shared, and it has had no effect on this
> computer. I am unable to use the desktop computer. There
> is an unknown icon on the desktop that has a file name
> HTTP:400 shell/windows. Is there anyway to correct this
> problem, does anyone know a way to get back online through
> this computer?
You haven't told us 1) what operating system you're using; 2) what
antivirus you have installed. Here are some general instructions:
1) Take the infected machine off the Internet and any lan immediately.
2) From a different, clean machine download Stinger
(http://vil.nai.com/vil/stinger/) and run it in Safe Mode. Stinger is a
limited virus checker, but its advantage is that it is standalone and
doesn't need to be installed.
3) Hope that Stinger cleans up the machine enough to be able to
reinstall your av or install a new, current one. Update its definitions
and do a full scan.
4) Continue the cleaning process by removing any spyware with Spybot
Search & Destroy (http://www.safer-networking.org) and Ad-aware
(http://www.lavasoftusa.com). These programs are free, so run them both
since they complement each other. You may also want to run CWShredder
and HijackThis from http://aumha.org/freeware.htm. Although CWShredder
is no longer being updated, it will still clean older variants of the
CoolWebSearch malware. Be sure to update these programs before running
them. Always read the instructions before running a spyware removal
tool. It is best to run antivirus and spyware removal tools in Safe
Mode.
5) After you've installed your full-featured av, updated its definitions
and run a full system scan.
6) Make sure you are running a firewall.
7) Go to Windows Update and apply all security patches for your
operating system. Do not install drivers from Windows Update.
You may also need to check your Hosts files for hijacking. Since you
didn't say what operating system you have, I can't give you
instructions specific to that os, but here are some general
instructions for checking the Hosts files:
1. If you have XP, in XP's Search preferences, set the files and folders
handling to Advanced, and then check the box that will make Search look
in hidden files/folders.
2. Now enter the search term "hosts" without the quotes.
3. You will get several hosts and lmhosts files. Double-click each one
to open it. When you do this, you'll get a Windows dialog box saying
that Windows cannot open this file, do you want to use the web or
select from a list to find the proper program. Choose "select from a
list" and highlight Notepad. Make sure the box to always use this
program to open this type of file is not checked.
4. Now carefully examine the file. Lines that begin with a # are
comments and don't count. Leave them alone. Unless you know you use a
proxy server to get to the Internet or you added entries yourself, the
only uncommented entry that should be there is:
127.0.0.1 localhost
If you see any other entries, delete them and Save the file. Make sure
you scroll all the way down to the bottom of the window if there is a
scrollbar. Do this for each file you found.
Malke
-- MS MVP - Windows Shell/User Elephant Boy Computers www.elephantboycomputers.com "Don't Panic!"
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