from what you are saying, the problem lies very likely in the router configuration.
Since you have a cable (not DSL-) modem, the router should get it's IP address straight from the modem. There is a know issue with the Toshiba PCX 1100 cable modem. If this is your modem, see the information here
I would suggest to reset the router to factory default, since I don't know what you have configured already. You will
loose all your configurations (wireless, security, portforwarding etc.), but it's always better to start from a clean plate.
Connection-specific DNS Suffix . :
- Turn off your computer.
- Unplug all Ethernet cables (Modem -> Router, Router -> Computer)
- Power on the router. Reset it by holding the reset button in the back of the router for about 20 seconds.
- Connect the modem to the router with an Ethernet cable. (Router WAN port)
- Connect the router and the computer with an Ethernet cable. (Router LAN port)
- Power on the computer.
- Open a command prompt, then type "cmd", click "OK" and in the following window type "ipconfig /all" and hit ENTER. If your computer is set to obtain it's IP address and DNS automatically, your output should look similar to this:
Description . . . . . . . . . . . : [Name of your Ethernet adapter]
Physical Address. . . . . . . . . : XX-XX-XX-XX-XX
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.2.XX
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
If it looks different (IP address is 0.0.0.0 or 169.X.X.X), let me know. In that case we have to configure the computer correctly. Go back to the command prompt window and type "ping 192.168.2.1" and let me know if this command finished successfully.
Also - sometimes your Internet Service Provider has special requests in setting up your router, especially comcast or Cox. When you attempt to open a web page you may recieve the following message:
- The page cannot be displayed
- The page you are looking for is currently unavailable
- The website may be experiencing technical difficulties, or you may need to adjust your browser settings
This is how to resolve this problem:
First make sure that you have a valid connection to the router and that you have a valid IP address.
(note: For a wired connection you should have a link light on the numbered port of the router to which your computer is connected. You should have an IP address in the range 192.168.2.x. To check your IP address, click on Start, Run and type "cmd". Click OK. Now type in "ipconfig" and hit enter. Your IP address will be listed.)
- Unplug the power cable from the modem for 3 to 5 minutes
- Open a Web Browser
- In the address bar type http://192.168.2.1
- Click on Connection Type in the left hand column under Internet WAN heading
- Enter your password if any and click Submit (Default = Leave blank)
- Follow the on screen instructions.
- Once complete, click on the Home link at the upper right of the screen.
- It should now show Connected as the Internet Status at the top right hand corner of the web page.
If this did not solve your problem or you have any more questions, just come back here and leave a comment - I'm happy to help.