I have a client whose router continues to lose connectivity. I have upgraded the PC (they needed a new one), the modem and the router and yet the connection still cuts out. They have cable broadband and currently are running on a Netgear MIMO wireless router to which they are connected via Ethernet. Connecting directly to the modem restores connectivity. Resetting everything will restore connectivity, but apparently only when I do it (when they do it, it doesn't work although I've shown them many times how to do it).
Is there anything that I can try? Changing the MTU, perhaps? Disabling the router's firewall? I don't mind restarting everything for them, but I'm forty miles away and can't do this every week.