C6300 Only Works in Router Off Mode

Hi guys. Friday night/early Satuday morning we had a power outage. Ever since, my modem/router has refused to put out WiFi signal; and if it does, it doesn't get a response from the DNS, and even my hard wired connection goes out. If I go into Router Only mode, it works fine, but no WiFi signal of course. This of course causes a major issue, since my girlfriend is a teacher and does a lot of her work from home via WiFi. 

My firmware is up to date. I've tried factory resets and nothing changes. I've tried using OpenDNS as my DNS servers and it still doesn't change anything, so it wouldn't be on my ISP end. I can basically access the internet through Router Only with a wired connection. Any help is greatly appreciated, more so appreciated by the lady on my back about it! :P