Modem problem

[justanovice]

Hear's the deal. I recently purchased a TP-Link TL-WR541G wireless router & a TL-WN322G wireless usb adapter. I followed the directions, got an excellent wireless connection. The problem is my dsl modem. I have a Speedstream 5100. All the lights are lit up except the internet light & I can't get connected to the internet. I would appreciate anyones help.
Thanks

 

[KSoD]

You will have to contact your ISP and have them run a diagnostic on the modem to make sure it is fully functional.

 

[justanovice]

that's the thing. The modem works fine when i disconnect the router & reconnect the modem to the pc.
still

 

[Kharn]

If it's a router you might have to clone the MAC address from one PC on your network.