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Loss of internet connectivity (Win XP)

Discussion in 'Networking' started by Kevy Kev, Sep 22, 2005.

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  1. Kevy Kev

    Kevy Kev Thread Starter

    Joined:
    Sep 22, 2005
    Messages:
    7
    I posted this in another forum here, but thought it might be worthwhile to x-post it here in the Networking one as well:

    Hey all:

    I'm having a MAJOR problem with one of my computers. Dell Dimension 8300, approximately 2.5 years old.

    Symptom: I lose internet connectivity after a variable period of time of being logged into my computer. I can actually ping and do tracerts to verify that I can "see" the internet. But, my any other methods of accessing the internet do not work! I can't surf using a web-browser, my IM clients do not work, and I can't play any of the online games. I can still share files with computers on my local network. The problem started this past weekend (about 9/17). As far as I can tell, the only way to get it back is to reboot (see below though).

    Recent changes: I added a computer to my network about 10 days ago. I also put the Dell and the new computer on a Belkin KVM switch (soft switch). I put a third (existing) computer on a wireless interface, but this was done AFTER the problems started occurring. I did a Windows Update (per the balloon) on Sept 17th, which is *about* the same time the problems started occurring.

    What I have already tried:
    ** Run both Ad-Aware and Spybot
    ** Updated my BIOS
    ** Updated my NIC driver
    ** Set the NIC to use 10Mbps/Half Duplex
    ** Installed a new NIC
    ** Did a System Restore to earliest version that I could (beginning of Sept)
    ** Tried to back out the most recent changes of Windows Update, but the one that I believe to be the "offending" update (Sept 17) was not listed. Most of the other ones were.

    New Discovery: Here's something that I figured out last night. If I just Log Off and then log back on, then I can "recover". So, a full shut down is not required. The behavior is the same for any user.

    So, it's definitely not a hardware issue(?). It appears to be an OS issue. But, I've no idea how to correct the problem, short of reinstalling with a clean OS. I will admit, I haven't tried a virus scan, but doing a search I can't find any info on a virus that would cause this behavior. Could it be a virus?

    Please, if anyone has any experience with such a problem or knows of other things I can try, I would greatly appreciate your insight!!

    Kevy Kev
     
  2. stod73

    stod73

    Joined:
    Aug 13, 2003
    Messages:
    832
    What are your power settings on the NIC(s)? Perhaps XP is turning the NIC off.
     
  3. Kevy Kev

    Kevy Kev Thread Starter

    Joined:
    Sep 22, 2005
    Messages:
    7
    Ah, yes, that's another thing that I checked. :)

    The PC is not turning the NIC card off. I set it to never turn it off (whatever the wording was, I can't remember).

    It's odd that *after* "losing" web, IM, etc. connectivity, that I can still ping. I can ping a URL or the actual IP address. It resolves the IP Address if I ping the URL. Tracert confirms that I am not pinging a locally cached version as well (not sure if it would do that with a ping anyway).

    I'm going to try the following later this afternoon (when I get home):

    1) Booting into Safe Mode (not sure if I'll have full network conn in this case, but still worth a shot)
    2) Using the NetShell command to reset the IP stack (netsh int ip reset c:\resetlog.txt and also do netsh winsock reset)
    3) Someone else suggested looking in the Registry, but I've no idea how I would make heads or tails out of that.
    4) System Configuration Utility (msconfig.exe)

    The name of the Windows Update that I did was the Malicious Software Removal Tool (Article ID: 890830) For some reason, deep down, I feel this is the source of the problems. But, that's probably just me grasping at straws at this point. ROFL

    Thanks for the response,

    Kevy Kev
     
  4. TerminatorX

    TerminatorX

    Joined:
    Sep 25, 2005
    Messages:
    82
    what about runnin an av app....most of the nasties will hide in system restore...so when u restore u will still hav em runnin on ur system
     
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