Thanks. I was half expecting a stock answer that I have seen provided for others that doesn't give a proper answer in response to the on going problem which I have probably solved anyway.
I thought about installing the Intel desktop version but decided to get the alternative which although in my opinion does exactly the same job, it has a better antenna and certainly does not have the USB connection lead for Bluetooth power wiring fault.
As regards the regulatory business, I see that newer versions of my laptop now come fitted with AC adapters and retro fitting an AC adapter is a much cheaper option. I am fully aware that I already had WIDI. In common with both PC's, there is a marked improvement in 5 GHz and inter PC file transfer speed and there are no other problems.