sounds like you've royally managed to Deleted your router config.
Anyway, the simplest and quickest solution would be to hard reset it.
There should be a reset button on it somewhere - you'll probably have to push a little pin into it to reach the the button.
normally you have to hold it down for 20 seconds (until the lights start dancing)
the router will return to factory settings and you will be able to get on via google chrome again on the default address with the default password.
configure your internet settings again.
Your internet service provider will be able to help you do that.
Daddy, what does FORMATTING DRIVE C mean?