I just bought an Onkyo TX-NR-737 to replace my 15 year old Onkyo and I'm in over my head.lol.I have it connected to my modum for Internet (Tune-in) and its keeps dropping off and it doesn't always come back.I don't have it connected by HDMI cable but by USB. I can't connect directly to my Pc as it doesn't have the port for HDMI.Any help would be greatly appreciated.Thanks