>>>I'm looking for a clue here.
>>>
>>>My ISP is Bell and I use a Bell DSL modem/router. My own pc (desktop) is hard wired to the modem through an on board ethernet adapter. I can also use my office pc (laptop) through the wireless connection.
>>>
>>>So, Thursday morning I was working with my PC and with the laptop and everything was good. Been working this way for a year. Eventually I turned them off and left them. Thursday evening I booted up my PC and, while the network connection to the modem seemed to be fine, I couldn't get an internet connection. I powered up my laptop and got a wireless connection and the internet connection was fine.
>>>
>>>I figured I the on board ethernet on my PC had gone south, so I disabled it and put in a new ethernet card and attached a new cable. Still no internet connection, but the network connection to the modem still looked good. Next I uninstalled the ethernet card and tried a wireless adapter. Signal 100% and good connection. No internet connection. Meanwhile the internet connection from the laptop is still fine.
>>>
>>>It doesn't appear that the modem is the problem since the laptop works great with it. But my own PC just can't get an internet connection nohow. I can't even ping the router.
>>>
>>>Nothing has changed in the firewall or anything else. The only thing my PC was doing between the time it was getting an internet connection and when it was not, was that it was turned off.
>>>
>>>Like I said, looking for a clue here. Any thoughts?
>>>
>>>Thanks
>>
>>How is your machine getting it's IP address? Is DHCP turned on on the router?
>
>Automatic from the router
>
>>What brand is the router?
>
>Don't really know the modem and router are one single box from Bell Canada
>
>>what IP address does the machine that doesn't work get?
>
>Always the same address - 192.168.2.10
>
>>Can you set the IPs manually?
>
>I've never tried. Never had to. The IP address is getting assigned properly and as I said, it's static. Has always been the same. No, wait. That's a lie. When I changed the ethernet adapter and then the wireless adapter, the router upped the IP address from 192.168.2.10 to .....11 and then ....12.

In the early days of DSL they would program the MAC address of the card itself into the modem. (if you used a router you had to fake the maC address. See if there is someplace you can punch in the MAC of the original card into the new one. (or teach the modem the MAC of the new card)