Cable modem+router=local network but no internet

[dt451]

The promlem: I have a Terayon TJ715x Cable modem wich I used to connect to a TP-Link TL402M router in order to share my internet conection among my two computers. Recently I used the router elswhere, for about a year, then took it home and got it set up again, but I can't get the internet connection working. The intranet works fine, but there-s no connection to the outside. When the modem is directly linked into each of the computers using ethernet I have connection. So both modem and routers ports are working as the router can aqquire dhcp info from the modem, and the modem can communicate with the PC-s. But linked togeather only intranet is accessible.

[johnwill]

Reset the router to factory defaults by holding the reset button down for 15 seconds with power on.

• Turn off everything, the modem, router, computer.
• Connect the modem to the router's WAN/Internet port.
• Connect the computer to one of the router's LAN/Network ports.
• Turn on the modem, wait for a steady connect light.
• Turn on the router, wait for two minutes.
• Boot the computer.

When the computer is completely booted, let's see this.

Start, Run, CMD to open a command prompt:

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 you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.