AC1750 not detecting internet from CM1000

[Tfo0001]

Set up my new modem tonight through Xfinity. Modem has internet but when I connect to the router the router shows no internet.

I tested the modem and it provides internet when connected directly to my Xbox through the Ethernet cable.

I’ve tried the process of unplugging everything and then doing modem + 2 minutes -> then router

Any advice?

[plemans]

power off the modem and the router. Disconnect everything from both, even coax from the modem. You can even try a factory reset on the router to ensure it isn't an old setting causing issue. Push and hold reset for 7-15 seconds while its powered on. 

Wait a couple minutes. 

Then connect coax back to the modem. power it on. give it 3 minutes to fully boot. 

Then connect lan cable from modem to wan port on router. 

power the router on. Wait 3-5 minutes for it to fully boot. 

Is the ethernet connection showing connected/usable on the modem and the router at this poitn? 

If so, try setup on the router.