Hi Groom,
Thank you so much. This is exactly the information that I needed. Problem solved.
As a point of interest; before receiving your answer, I had been on the phone to Dell Support re the problem. When I say 'on the phone' I mean for about ten minutes or so listening to awful music before a 'human' answered.
After explaining the problem, this 'expert' said he would have to pass me on to another dept. as it sounded like an Windows XP problem (raised eyebrows from me).
After a few more minutes of even worse music this 'more expert' expert (in India) listened to my problem (several times of course because of the language problems) and finally said to press Fn + F2 to enable/disable wi-fi connection.
When I asked him would I get some indication on the screen to let me know if this action was taking place (trying the procedure as I spoke to him, with nothing visible on the screen) he just kept saying to press the keys to disable and enable the function.
I told him that I was not happy that this was a complete solution. He just repeated the same thing again - and again, till finally I gave up!
Knowing which of the green light indicators to look for is the final bit of the jigsaw that I needed. Pity he didn't seem to know this.
Have owned the Dell Inspiron for about 4 years with no problems I'm completely underwhelmed by their so called Support Centre when I did actually need their support.
dixons