c6300 lost all ethernet connectivity

I think I killed it!  Accidentally cut through (like with wire cutters) a cat 5 patch cable while still connected to router.  Now I can't get a link light or internet on any of the four ethernet ports.  Cable modem and wifi internet still work.  If I unplug the power and/or turn off the power switch, the yellow and green lights on each port do blink during the power on procedure.  But nothing seems to work on the ethernet ports after it warms up.  Is it possible to kill a router by cutting through a cable?