loosing connection to the internet after about 20s

Hi,
I have a problem, but I can't solve it by myself (2 hours of spent time
yesterday and no clue what to do).

There is a network instalation: antenna, then some router, maybe some other
box, then cables to flats of all users in the building - in friend's flat is
one switch and there are 3 computers connected to it (2 desktop computers and
a laptop, all with Windows XP installed). About 2 weeks ago all computers has
no error with connection to the internet, then the friend was on vacation,
his notebook was 2 weeks shuted down and now, after return, an error occured:

When pluging the cable in, internet is working well about a few seconds
(about 20s) and then nothing happen (can't browse any www address, connect to
IM, resolve any IP address from it's text format to the number format,...).
Only solution, how to repair it for a while is open Network Connections
window, right click on the network connection and in context menu choose
"Repair". Then it runs again about 20s and again crashes down.

All computers (desktops and notebook) has same settings (all of them get IP
by DHCP and all of them has same settings in network connections dialogs),
notebook has right cable, all slots in switch are without any defect (I
tried to change cables). All programs that can block the connection was
shutted down (Windows firewall, Eset NOD antivirus soft. and some anti
malware soft.) and without any improvement.

In the moment I don't know what to try next so I will appreciate any help.

Best regards
Breta

Posting the result of ipconfig /all may help.

--
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
"breta" <breta@discussions.microsoft.com> wrote in message
news:F9F44297-CAFE-4477-84A7-C595C09C49EC@microsoft.com...
> Hi,
> I have a problem, but I can't solve it by myself (2 hours of spent time
> yesterday and no clue what to do).
>
> There is a network instalation: antenna, then some router, maybe some
> other
> box, then cables to flats of all users in the building - in friend's flat
> is
> one switch and there are 3 computers connected to it (2 desktop computers
> and
> a laptop, all with Windows XP installed). About 2 weeks ago all computers
> has
> no error with connection to the internet, then the friend was on vacation,
> his notebook was 2 weeks shuted down and now, after return, an error
> occured:
>
> When pluging the cable in, internet is working well about a few seconds
> (about 20s) and then nothing happen (can't browse any www address, connect
> to
> IM, resolve any IP address from it's text format to the number
> format,...).
> Only solution, how to repair it for a while is open Network Connections
> window, right click on the network connection and in context menu choose
> "Repair". Then it runs again about 20s and again crashes down.
>
> All computers (desktops and notebook) has same settings (all of them get
> IP
> by DHCP and all of them has same settings in network connections dialogs),
> notebook has right cable, all slots in switch are without any defect (I
> tried to change cables). All programs that can block the connection was
> shutted down (Windows firewall, Eset NOD antivirus soft. and some anti
> malware soft.) and without any improvement.
>
> In the moment I don't know what to try next so I will appreciate any help.
>
> Best regards
> Breta

On Aug 12, 12:54*pm, breta <br...@discussions.microsoft.com> wrote:
> Hi,
> I have a problem, but I can't solve it by myself (2 hours of spent time
> yesterday and no clue what to do).
>
> There is a network instalation: antenna, then some router, maybe some other
> box, then cables to flats of all users in the building - in friend's flatis
> one switch and there are 3 computers connected to it (2 desktop computersand
> a laptop, all with Windows XP installed). About 2 weeks ago all computershas
> no error with connection to the internet, then the friend was on vacation,
> his notebook was 2 weeks shuted down and now, after return, an error occured:
>
> When pluging the cable in, internet is working well about a few seconds
> (about 20s) and then nothing happen (can't browse any www address, connect to
> IM, resolve any IP address from it's text format to the number format,...).
> Only solution, how to repair it for a while is open Network Connections
> window, right click on the network connection and in context menu choose
> "Repair". Then it runs again about 20s and again crashes down.
>
> All computers (desktops and notebook) has same settings (all of them get IP
> by DHCP and all of them has same settings in network connections dialogs),
> notebook has right cable, all *slots in switch are without any defect (I
> tried to change cables). All programs that can block the connection was
> shutted down (Windows firewall, Eset NOD antivirus soft. and some anti
> malware soft.) and without any improvement.
>
> In the moment I don't know what to try next so I will appreciate any help..
>
> Best regards
> Breta

I have seen some anti-virus / firewall that do not completely shut
down when you turn them off. You need to uninstall them in order to
completely remove there monitoring module.