Intermittent Disconnects, T3 AND T4 TIMEOUT

I experience many internet issues during the day, especially from 3 to 9. An internet technician came and said all the cabling from our house to the street box is fine and the modem has already been replaced. The internet is nearly unusable, all devices connected lose internet and the logs say no ranging response was received. The tech said it might be due to noise but he said it might not fix the problem. Any help? I have the gigablast plan and the new modem/router is a combo from Netgear called the nighthawk x4s.