I'm not sure if there's an answer for this but I was wondering what path I should take in figuring out what is going wrong.

For the past 3 weeks we've been sporadically losing our cable internet connection here at the house. It goes out for 5-10 minutes about twice a day, never at the same time. My ISP supplied modem is lit up and showing that the power is on and that it is online. My ASUS router does not show any problems either. Both units are showing the same indicator lights whether the connection is good or lost. Although the wireless remains working, there is no internet connection to the wired and wireless devices we use.