Can't get any connectivity

Any help at all is appreciated. Any direction or direct URL links are great.

I’m trying to configure this from a Windows box

I have just purchased a 2011RB router. I had connectivity and was using this for a

brief few days. Through configuration changes/testing I have somehow locked myself
out and have no IP connectivity using the ports on the front of the router. (I don’t
have a rollover cable for access to the port on the back or USB)

I have reset the router using the plug in and hold down the factory reset button. At
this point when I plug in I have link light showing physical connectivity is there.

Not obtaining an IP therefore I don’t assume DHCP is running -OR- there is another issue I’m not aware of.