I recently got a new modem because the old one was not working well. It is AT&T DSL. When I attached it to the AEBS, the AEBS light turns green, but there is still no internet. Furthermore, when I go to Airport Utility, it says it cannot be found. It is connected to my PC. If I connect the modem directly into my PC, internet works fine. When I look on my Macbook or iMac, it lists the internet connection I should have, but it doesn't work there either. Do I need to do a hard reset? If so, how do I find out factory settings (passwords, etc.)?