Wireless router connection good, IP address assigned. No Internet
I replaced my old wireless G router switch with the Asus RT-N56U to use 802.11n. Everything works fine except my main notebook (ACER Netbook(XP) - Atheros AR5007EG built-in wireless adapter). The built-in adapter connects to every other wireless access point and can get to the internet but will not get to the internet using the Asus router. Every other device I've tried to connect to the Asus wireless router connects and gets to the internet. I purchased another wireless adapter to use with the notebook and it works fine with the Asus router. I put my old G wireless router in as a separate access point and the notebook adapter works fine with it.
Using the built-in adapter I can ping 127.0.0.1 to test ping and I can ping the notebook ip address assigned by the Asus router but I can't ping anything else including the default gateway. I have removed the device, re-installed, redone the driver etc. with no success. I am currently using the new usb wireless adapter to connect to the Asus router but would really like to use the internal adapter and remove this external usb adapter.
Does anyone have any suggestions?