I have Comcast internet and cable tv. My internet keeps going off for hours and then comes back on for maybe a day or so and then off again. My laptop is not using the wifi but is wired . I called Comcast and they had me give them the modem numbers. They said my modem is "old and broken". It is over 8 years old...Why would it work at all if "broken". I don't do anything fancy..no gaming ...no big damand. I just email, shop, facebook. Simple stuff. I even power cycle the modem and at times it might work but mostly not. It seems to normally go off in afternoon and last night was off all night. This morning it's back on and working by itself. Anyone have any knowledge on this. Tv is still working during these times. Thanks for any help.