Linksys Wireless Router :: E4200 Internet Stopped Working On Laptop

I purchased an e4200 about 6 months ago and it worked great until the other night the Internet stopped working on my laptop (wireless). I tried unplugging both my modem (Motorola Surfboard) and router and plugging them back in, but no luck. I can accesss the Internet when plugged directly into the router (with both my PC and laptop), so it looks like the issue is with the e4200. To make matters worse (and I fear much worse), I can't even access the admin page to the router through either the Cisco Connect software or through the IP address. I've tried resetting it, I've tried the 30/30/30 reset (holding the reset button while doing an unplug and pluging back in), and reinstalling the Cisco Connect software, all to no avail.
 
I've found threads where others have not been able to access the admin page, but they still had access to the Internet url... I haven't found a similar thread where the router doesn't seem to work at all. A few other bits of information I can think of (let me know if there's other information I can provide):The Cisco logo light flashes slowly after reset which I believe is expected.The lights in back of the router seem to work as intended.Running Windows 7 Diagnostics finds the connection "doesn't have a valid IP configuration" and "The default gateway is not available."