How to do a hard reset on the router?

Question

I need to reset my router but I need to do a hard reset to factory default because I can't find the router anywhere. The IP address is not right. I'm not able to use the software to reset the router because I can't access the router. I can't find it! It's sitting right in front of me but it's not THERE!!!!

Help please.

How in the world do I do a hard shutdown?

Thanks,
Mike