The BlueTooth icon has disappeared from the R/H bottom of my screen, it is this that I click on so as to enable to send photographs from my phone to my computer.
Thank you so much Buenchico, I followed the instructions but noticed that the box already had a tick in it, but still the icon was not in the system tray, so I unticked it and pressed OK and then re-ticked it and pressed OK, and I now have the icon back.