Router failed

My router went down and I had to change it. Since putting in new router, I cannot link any of my switches. Is there a way to reset them to their original factory settings

Which switches (a complete list would be helpful). Did you keep a copy of the installation instructions? Now did you setup the new router to put out the same LAN IP range as the old?
From Manual:

Did you set new Wi-Fi name to be the same as the old one? if you did, the devices should connect automatically. this would be the easiest way, or you may need to reset every device by press the reset button for 5 seconds and pair them.