[gunnersboy]

I've recently had the same problem although the internet came back on after leaving the modem off for about an hour.

However we had already booked an engineer to come round and when he did he said the reason was because the signal was being weakened by 10db with a little connector on the back of the modem. He said that unless the green box was just outside the house or in the city it wasn't needed to have this connector.

So if you don't live in the city and the green box isn't directly outside your house then have a look at the back of your modem, the cable coming from outside will go into your modem and there is a possibility that a connector will be on the cable. To identify this it should have some writing on it which says 10db on it. Just unscrew this from the cable and modem and plug the cable directly back into the modem.

It might not connect straight again but if you leave it off for an hour then it may work.

Hope that helps!