For the past week, my internet box 2 randomly crashes - the box light stays white but no internet, tv or phone works. The wifi drops briefly and then when devices try to reconnect to the wifi an "incorrect password" error appears. After the 1st reboot, everything works for about 10 minutes before the same happens again. After the 2nd reboot, it seems to stablise for about a day, before happening again. Last night I had to reboot 3 times to get it to work for more than a few minutes. Box is about 18 months old and no previous problems. Is this a problem with the box and do I need to replace it?