[PolarisZ44]

I was running windows vista normally, with a broadband connection through a NetComm modem, when the internet connection suddenly dropped out. I disconnected and reconnected the modem and rebooted the computer, however this did not solve the problem. Other computers in my house, connected through the same modem, did experience the drop-out but reconnected upon reboot. I tried using the diagnose connection problem feature of IE 7, however a dialog came up about Host Service has stopped working, and the diagnosing feature then stopped. This dialog appeared every time I attempted this diagnosis, even after several reboots. I disable AVG and Defender, still no luck. I have never in the past experienced a drop-out which could not be fixed upon reboot, and where other computers on the same network were able to connect. Any help would be greatly appreciated.

System specs.

Intel Core 2 Quad CPU Q6600 @ 2.40 GHz
4 GB RAM
2 512mb GeForce 8800GT in SLI
Windows Vista 32-bit OS
NetComm NB 1300 PLUS 4 modem

[badasmyth]

I lost my connection and after several hours of tech support and an inhome tech. we got it back. The solution, shut down and DISCONNECT POWER CORD. None of the techs believed it but I'm connected now and have been since 1/17/08. The tech was in the process of switching mother boards and had shut down and disconnected the power cord. He remembered that he needed some info from the compuer and reconnected. And we had internet. The tech said this was a first for him and hadn't had to do it this way in years.

[TerryNet]

Try a known working cable and LAN port on the modem/router.

Start, Run, CMD, OK to open a command prompt:
(For Vista type CMD in the Search box after Start)

Type the following command:

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If necessary use a text file and removable media to copy the results to a computer with internet access.