Computer keeps dropping off network....

[Guest]

I have an odd situation here. I have a Windows XP Pro. Sometimes it behaves
on the domain like all the other XP's - and sometimes it likes to drop off.
When it drops off the computer goes crazy. Try right clicking My Computer to
show the properties - it hangs. Try browsing the network and you can't see
anything. Trying pinging the dns server or another XP - nothing. When it
drops off the network, the end-user is forced to reboot the computer to get
back on the network.

Although this is a fresh full install of XP, I've scanned it several times
for viruses and found none. No spyware junk laying around. The only
software we have installed is Office 2003 and webcam software. Had Panda AV
on there, but removed it because it's a piece of junk. First I thought the
cable was bad so I replaced that, but the same isses still came around. The
only thing I haven't done yet is replace the NIC card - however, before we
reformated and reinstalled XP and had the previous XP on, these issues never
happened so I doubt it's the NIC card. Perhaps a bad install of XP? Any
ideas on this type of behavior?

 

[Robert L [MVP - Networking]]

any errors in the event viewer?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
I have an odd situation here. I have a Windows XP Pro. Sometimes it behaves
on the domain like all the other XP's - and sometimes it likes to drop off.
When it drops off the computer goes crazy. Try right clicking My Computer to
show the properties - it hangs. Try browsing the network and you can't see
anything. Trying pinging the dns server or another XP - nothing. When it
drops off the network, the end-user is forced to reboot the computer to get
back on the network.

Although this is a fresh full install of XP, I've scanned it several times
for viruses and found none. No spyware junk laying around. The only
software we have installed is Office 2003 and webcam software. Had Panda AV
on there, but removed it because it's a piece of junk. First I thought the
cable was bad so I replaced that, but the same isses still came around. The
only thing I haven't done yet is replace the NIC card - however, before we
reformated and reinstalled XP and had the previous XP on, these issues never
happened so I doubt it's the NIC card. Perhaps a bad install of XP? Any
ideas on this type of behavior?

 

[Guest]

A few errors about the windows time not synching up - but there was an LSAS
error in there, which lead me to a KB article which lead me to calling MS to
get the hotfix and applied that (which solved my LSAS error) but didn't solve
this computer dropping off the network all the time. Today I went ahead and
just triple checked the DNS entries on the client machine. Got on the DNS
server to see if the computer was showing up there and it was too. Still
drops off. I'm now suspecting 3rd party software is causing it (which will
take me a while to narrow down).

 

[Robert L [MVP - Networking]]

Run clean boot. This how to may help,

How to run Windows OS with a clean ...Post new topic Reply to topic, chicagotech.net Forum Index -> Windows ... With MSCONFIG, you also can configure a clean boot to disable common startup ...
www.chicagotech.net/netforums/viewtopic.php?t=57


Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
A few errors about the windows time not synching up - but there was an LSAS
error in there, which lead me to a KB article which lead me to calling MS to
get the hotfix and applied that (which solved my LSAS error) but didn't solve
this computer dropping off the network all the time. Today I went ahead and
just triple checked the DNS entries on the client machine. Got on the DNS
server to see if the computer was showing up there and it was too. Still
drops off. I'm now suspecting 3rd party software is causing it (which will
take me a while to narrow down).

 

[Guest]

Here is addtional information:

Problem - computer keeps dropping off network for no reason - and to top it
off, programs crash A LOT. Naturally, this forces my user to restart the
computer (a lot during the day).

So far, I have 10x check the subnet address - that's correct. I've ran
nbtstat -R a few times to flush it out. I've disabled, renabled, restarted,
stop/started the computer browser service a dozen times. There is only one
domain in the company and a single domain controller. The client is in the
domain. The client is a WinXP Pro with SP2.

I see these in the event viewer all the time:
Application Log:

ID: 1054 - Usernv
Windows cannot obtain the domain controller name for your computer network.
(An unexpected network error occurred. ). Group Policy processing aborted.

ID 1000 - Application Error
Faulting application drwtsn32.exe, version 5.1.2600.0, faulting module
kernel32.dll, version 5.1.2600.3119, fault address 0x00083f9c. (Dr. Watson
loves to crash on this machine).

System Log
ID 4321 - NetBT
The name "PLASTICS :1d" could not be registered on the Interface with
IP address 192.168.0.50. The machine with the IP address 192.168.0.196 did
not allow the name to be claimed by this machine. (PLASTICS is the domain
name)

(that ID 4321 is just clogging up my system log...over and over and over).

I've been going in circles w/this. Even after reinstalling Windows (and 3rd
party app's and hardware) - this has been happening. I know I can do the
systematic way of process of elimination by just unchecking stuff in
msconfig, but that takes forever and will be my last resort. Any idea's on
why this happens or how to resolve it? THANK YOU in advance for your
help/ideas.