Hello! I am having a problem with a modem, apparently, that has worked well for around 3 years. The present problem is that it disconnects me at around 11 pm every night and remains disconnected with the power light flashing red to green to red (with the ethernet flashing green at the same time). It will not reconnect by itself, but will when I push the on/off button---only to disconnect again repeatedly at different intervals. This happens every night, but only at or around the 11 pm mark. It's fine during the day. What could possibly be the problem? My ISP says there was been no service disruption at this time. Thanks for any help or ideas.