I know this is frustrating PlasticLipgloss but please bare with me.Disconnect the modem from the WAN port on the router. If you would try a factory reset. To do this, find the little button on the back of the router by the power connection. Follow the instructions below exactly...
Restoring the Factory Defaults
Press and hold the
“Reset” button for at least 10 seconds, then release it. The lights on the Router will momentarily flash. The Power/Ready light will begin to blink. When the Power/Ready light becomes solid again, the restore is complete.
Make sure the lights are all steady on the router. Connect the network card to the router using a new cat5 cable. This will ensure that you have a good connection. Faulty cables can be intemittent and look ok sometimes...Changing the cable to a new one just rules out the cable...
Now see if you can access the router (remember...don't hook up the modem yet...). If you can access the router then you can set the router back up using the setup software for your router. Just follow the instructions in the manual.
If this doesn't work then it is possible there is a software problem. Give it a whirl...Let us know.
LC