Thanks for that. You got it in one, a little embarrassing for me but I'm getting used to it. I should have paid more attention to the manuals that came with the computer.
There is no wirelesss switch tucked in a corner, instead it uses the FN + PrtScr combination to turn the wireless Off & On.
I am a bit surprised that the Windows troubleshooter could identify the problem but is unable to switch the WiFi back on for me.
I did not mention that I use a Dell Inspiron 15 (5,000 series) laptop. So far I am satisfied with the performance but wish that Dell had put in a better Touch-Pad.
Before this I used, and still have, a Sony Viao running Windows 7. That was not a good experience as there are too many things running for the processor to cope with. When I got this laptop I restored the Sony to factory specs using its built-in function, I had no problem losing all my applications and data but am truly disappointed that the performance has improved only marginally.
Thanks again guys for helping me out with my problem.