What you are going to have to do is download a self-install firmware and flash the router. This can be done by
1.holding the reset button down until the power light flashes
2.continue holding the reset button and unplug the router wait about 30 seconds
3.while still holding the button plug it back in and release the reset button this will put the router into maintenance mode
4.after it is in maintenance mode run the install
I am a Technician and have to do this two or three times a week for people who screw with their routers and cant get in to it. Sorry for the slow reply man if you have any more questions email me at Antnyjohnson@gmail.com or PM me on AIM Antnyjohnson. If this doesn’t work you should call Linksys support to see if it is still under warranty.