The internet connection freezes PC after minutes of navigation

My PC suddenly freezes when I am connected to the net. I tried to run an anti-virus check
fortunately It didnt show any virus.
At work where I used a LAN connection the problem is absent.
The situation is different at home where I use a wireless connection. The PC freezes after navigating for some minutes. I am unable to do anything. The only is to shut down the pc.
My operative system is Windows 2000. The updated anti-virus I used is AVG.
Any serious suggestion would be welcome.
LVL 1
diteps06Asked:
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briancassinCommented:
Try uninstalling and reinstalling any wireless nic card drivers you may have installed.

Try turning off any firewalls you are using while browsing wirelessly.

You may also have a spyware / malware problem but it sounds more like a driver, card or LSP problem

Try to run LSP fix but make sure all of your  windows are closed when you run the software.

http://www.cexx.org/lspfix.htm


other anti malware utilities to try

Download  combofix.exe and save it to your desktop
Close any open browsers.
Before starting ComboFix disable and exit any anti-virus software, anti-spyware or any other security related software as they may interfere with ComboFix's operation.
Double click combofix.exe & follow the prompts.
When finished, it shall produce a log for you and display it on your desktop called c:\combofix.txt. By default this log is located on your 'C' drive. Post that log in your next reply along with a fresh HJT log as well
Note:Do not mouseclick combofix's window whilst it's running. That may cause it to stall.
Combofix http://download.bleepingcomputer.com/sUBs/ComboFix.exe

Also go to http://www.tomcoyote.org/hjt download hijack this run it and post the logfile here


If combofix reports it removed files then continue on through this if not then post it's logfile and a hijack this logfile

I would then get

http://www.ccleaner.com   download it and run it to clear out all the windows junk files and make the scans faster.

http://www.superantispyware.com download it update it and run it

http://security.kolla.de spybot s&d - download it install it (do not install tea timer, ) update it then run it

http://lavasoft.com - adaware - download it run it and then uninstall it
http://pack.google.com/intl/en/pack_installer_new.html?hl=en&gl=us&utm_source=en_US-et-more&utm_medium=et&utm_campaign=en_US&ciNum=11    - select to only download and install spyware doctor.

online anti virus scanners

http://www.pandasoftware.com   - panda activescan
http://www.bitdefender.com 
http://housecall.trendmicro.com


Additionally I would download and run rootkit revealer if it comes up with anything odd post it up here.
http://technet.microsoft.com/en-us/sysinternals/bb897445.aspx
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jderaCommented:
Is the windows firewall enabled?
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diteps06Author Commented:
A firewall is installed though not activated.
Here attached is the log file from Combofix.
 
ComboFix.txt
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briancassinCommented:
Are you using vidalia to go out to the internet if so by nature this is a slow connection and may appear or may freeze at times since you are going through several other computers on the tor network.

I would try disabling this and see if you still encounter problems
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diteps06Author Commented:
I had Vidalia. It has now been unisntalled including a firewall Jetico.
The result is unchanged.
Here attached is Hijackthiis log.
Which programs might be freezing the pc
hijackthis.log
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briancassinCommented:
Ok do you know what this is  if this website is not familar to you it needs to be removed.

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://italian.eazel.com/index.php?rvs=hompag

also these if they are not familiar to you

O16 - DPF: {B20D9D6A-0DEC-4D76-9BEF-175896006B4A} (RptViewerAX Class) - http://bo65-esercizio.enel:8085/wijsp/distribution/RptVieweren.cab

Unknown
      O16 - DPF: {EE6DD3BD-B5E5-4A05-9FF2-9DB265522F0E} (ZaboCheckAndRunControl Class) - http://bo65-esercizio.enel:8085/wijsp/distribution/ZaboIEen.cab


Do you know this domain if not this needs to be removed!

        O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = risorse.enel

      Do you know the IP or Domain 'risorse.enel'? If not, fix this entry.
      O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = risorse.enel
      
      Do you know the IP or Domain 'risorse.enel'? If not, fix this entry.
      O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = risorse.enel

Does this only happen when connected by wireless at home what about if you connected it at home wired does the problem still occur ?
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diteps06Author Commented:
I would try to remove the start page http://italian.eazel.com/index.php?rvs=hompage completely from the pc
The other entries cann't be removes as I am familar with it.
At the jobside I don't experience the problem. The network is a LAN connection in a domain.
It only happens with wireless connections. I believe anywhere I go it would be the same if the connection is wireless.
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briancassinCommented:
Have you tried updating the drivers for the wireless card ? What model do you have is it built in or a PCMCIA card ?
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diteps06Author Commented:
I finally resolved the problem by installing the firewall ZoneAlarm.
When a strange request appears after minutes of navigation I block it.
The internet doesn't freeze again. I had installed the firewall Jetico but it never helped. I later on disabled with no positive reults.
I was once advised it's better than ZoneAlarm.
From my experience I think even the free version of it is simply the best.
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briancassinCommented:
What is the strange request you are getting ?
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