Have cable and router is between cable box and Win 10 desktop computer. Used iPad for a couple of hours earlier today, came back an hour later and couldn't get iPad connection to router. Here's what I checked:

- Booted desktop and got no internet connection, with router showing no lights except two on the right when re-powered on.

- Swapped cables for direct connection from cable box to computer and have internet.

- Switched back to go through router and lost internet connection to desktop, and iPad shows router checked as if connected, but fails loading websites. 

- One time (and just once) when router was reconnected between cable box/PC and reset pushed for awhile, the right light (arrows going opposite ways) flashed continuously. Otherwise, two right lights come on, then go off after a short time.

What might be going on -- and what to do? Do these things just die like this? Thanks,