Suddenly lost internet connection

[Goi]

Hi,

My office PC is an IBM Thinkcenter P4 based machine with onboard Broadcom LAN, running on XP SP2. I recently installed an IEEE1394A PCI adapter(NEC chipset), and then suddenly my network stopped working completely. I'm not sure if it's the adapter that caused it, because even after I removed the adapter and did a system restore to a few days back, it still didn't work.

When I run ipconfig, it just shows "Windows IP Configuration" and then nothing.

The network icon on the system tray shows that it's connected and running at 100Mbps.

The NIC properties shows "connected, firewalled"

When I click on "repair", the following message pops up:
"Windows could not finish repairing the problem because the following action cannot be completed: Failed to query TCP/IP settings of the connections. Cannot proceed"

Under networking properties, all the usual suspects are already installed(TCP/IP, File & Printer Sharing, etc).

If I boot up into Safe Mode w/Networking, then networking works.

I also tried booting up into my Mandriva 2008 installation and it also works, so it's definitely not a hardware issue.

I tried uninstalling the Broadcom NIC device but it just hung there and then stopped responding, so I had to cancel it.

Any ideas on what might be wrong, and how to fix it?

Thanks.

 

[BassBomb]

I have similar problems with my sisters PC, and I have NO CLUE what is wrong. Running internet repair wizard in IE usually solves her problem after the first or second run. Totally random it seems

 

[JackMDS]

In order to get a "Clue" a step further than just complaining need to be taken.

http://www.ezlan.net/debug.html

 

[TheKub]

Try opening a command window and typing:

netsh int ip reset c:\iplog.txt

Restart.

 

[TheKub]

Any update?

 

[Goi]

Thanks.

I reset my winsock and ip and got the connection back. However I lost my IPsec/IP tunneling stuff and had to reinstall the client, but after that it worked.

 

[TheNiceGuy]

I lost my connection with the new XP update (has to do with ZA firewalls primarily).