The NIC is going to sleep, that is the problem
First of all , very kind of you to reply. The picture of the screen you put up does not exactly match with the Control Panel options Win 7 x64 Ultimate , which I have. Neverthless the options I could find. Now , even when I hibernate the computer with full power on , why should it go to sleep.
Regarding the subject in general , can you give some more info on NIC etc.