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Just had fibre broadband installed and the engineer connected the router to my desktop computer with an ethernet cable. I noticed that, when I switch the computer off, the wi-fi goes to sleep. Is the cable necessary?
you computer cannot be connect to internet using ethernet and wifi at same time
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Do you actually mean you lose 'wifi' or do you mean you lose internet connection. There seems to be a tendency these days to refer to internet connectivity as WiFi.
I've just checked - my computer isn't connecting through wifi but through the cable, possibly too old a model! When I switched it off last night, the wifi router went to orange (if I remember rightly) i.e. working but not connecting to the internet. I'll end up ringing BT perhaps at some point or not switching off the computer!
The router shouldn't change colour when turning off the computer. The colour changes are indications of the connectivity of the router to your broadband service, not towards your computer.
