No Internet Connection On Using Buffalo Whr-G300N

Fix No Internet Connection on Buffalo whr g300n Router:

I have the same problem using my Buffalo whr g300n. No idea why after months of no trouble I can't connect.

I've power-cycled the whole network. I have no trouble seeing other machines on the network but can't get to Internet. I tried renewing DHCP leases and connecting from other machines. I can't get past the Buffalo g300 router.

When plugged directly into modem I can connect to Internet so I know that the ethernet cable and modem work.

UPDATE: While I still don't know what the problem was a call to Buffalo TEAM solved it:

1. Goto the router's basic setup page through browser admin
2. At the bottom of "setup card" section click "run setup assistant"
3. If given the choice choose "DHCP" for connection type (with cable internet)
4. After a minute or two you should receive a "successfully connected" message.