IP Network stack on Windows 2000 appears to be dead though loopback ping to is working

I cannot connect to the internet nor connect this PC to another PC for a virus scan.

Anyone any ideas ?
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Rok BrnotCommented:
Can you tell me more about how this pc is connected, which network adapter, operating system ...
kes3Author Commented:
Working for a long time until. Do not know what caused this failure.

PC has IP and DNS dynamically allocated.

Connects to broadband through modem router. Modem router is fine. Modem router assigns IP.

Web pages will not load. Email cannot be collected. Ping to modem router fails. Only loopback ping works.

Wandered if it was sasser but have done a scan. Not that. Scanned it with wirus utility with updates about a month old. This picked up some java malwae which I deleted.

Have checked registry and cannot see anything in local user ...windows --> run that is starting up that is crippiling external software.
Rok BrnotCommented:
Run ipconfig /all in command line and tell me what  do you get
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LucFEMEA Server EngineerCommented:
Hi kes3,

Have you tried resetting the tcp/ip stack and winsock?
Here's a tool to do both at the same time:
(don't let the name confuse you, it works for all versions of windows)



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kes3Author Commented:
ipconfig /all
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

>ipconfig /all

Windows 2000 IP Configuration

        Host Name . . . . . . . . . . . . : windows2004
        Primary DNS Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Broadcast
        IP Routing Enabled. . . . . . . . : Yes
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : HP NC3161 Fast Ethernet NIC
        Physical Address. . . . . . . . . : 00-50-8B-DB-86-11
        DHCP Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        Autoconfiguration IP Address. . . :
        Subnet Mask . . . . . . . . . . . :
        Default Gateway . . . . . . . . . :
        DNS Servers . . . . . . . . . . . :
LucFEMEA Server EngineerCommented:
That means it's NOT obtaining a valid IP from the DHCP server. It's an APIPA address as explained at http://support.microsoft.com/?kbid=220874 
That means that either the DHCP server isn't giving out adresses, or the NIC isn't receiving one.
The winsockfix which I posted above might surely help in this case.

Rok BrnotCommented:
You mentioned that you cannot connect to anorher pc - how are this two pc connected?
kes3Author Commented:
Thanks folks. The winsock tool did it. All wirking fine.
LucFEMEA Server EngineerCommented:
Glad to help :)

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