Internet goes out

My internet goes out all the time on my home network. The internet speed is fast when it's working, but goes out frequently. Both Wifi and wired connections are lost for about 3-5 minutes and then everything returns. Sometimes I go hours without issue and other times the interuptions are much more frequent. I have reset my modem many times and done a reboot from the administrator page of my Netgear device. 

Can anyone offer any helpful thoughts?

Thanks,