Cable Modem rebooting - Avondale , AZ ( Coldwater Ridge neighborhood) Major cross streets Buckeye and Avondale Blvd

Good Morning , well I need your help with another COX moment , about 3-4 months ago they upgraded my Node here. 1.2 Ghz - 85 Mhz ,Everything has been great until about a week ago , now the modem goes...