|What would you like to do exactly.|
Restarting the router should be the problem.
But if you will reset the router, e.g. to factory defaults, you're out.
Therefore, you need another router the still give you the possibility, to connect to the network, where the cisco router is placed in.
Then I would connect to a PC located in the network, e.g. via VNC, and configure the cisco router from this PC.
The original poster should always write the last response !!!
Let us know, if the problem is solved !!!