New internet modem and archer c7 set up not working
I am totally a networking noob and just recently had a new modem installed by my internet provider. I have my archer c7 located in the basement which is hardwired connected running up stairs to my new modem. I honestly just need to use this router to have the internet connection in the basement to I can wire my Xbox and PC directly to it for gaming purposes. My older modem I had never had an issue. I had put the archer in access point mode and just plugged the internet cable in along with my pc and xbox into the ports and I was good to go. Now when I boot up my xbox or PC I get a connection for a second by my modem upstairs randomly just reboots itself twice and then I lose connection until it comes back online. after that everything is working fine. hopefully this makes sense to someone because I am lost.