Here's the problem. While the basement computer works when it is connected directly to the modem, when it is connected to the router, it does not. The modem is connected to the router, and everything is working properly there, but the connection straight from the router to the basement computer does not work. The LAN light does not come on for the router and the light at the back of the computer does not come on as well, like it does when the modem connects to it directly. In this setup however, the computer upstairs does get internet, through the wireless connection. All the cables have been confirmed to be working properly and, just as a test, I brought the router upstairs and plugged it directly into the Second Floor computer, at which point both the router's LAN light came on, and the light at the back of the computer came on. This tells me that the router is also working properly. The problem with the current situation is that only one computer at a time, either the basement computer (directly connected to the modem) or the second floor computer (through the wireless router) can have internet access. Why won't the basement computer accept the connection through the router?, and how can I get it to do so? Do I need to configure some settings, and if so, what?
The basement computer has a Windows XP Home Version 2002 (Service Pack 2) operating system, and VIA Rhine II Fas Ethernet Adapter. Any advice? Thanks!