Lightroom :: 5.2 Map Module Not Displaying Maps

I am having all sorts of problems with Lightroom 5.2 and wish I'd just stayed with Lightroom 4. I've already posted about not being able to import directly from an SD card in my laptops reader, and have at least found a work around to that (copy files to hard drive them import - I see others have found the same thing and it works just fine).
 
Now I have realised that the map screen in the map module is blank. I had this problem initially with Lightroom 5, and then it seemed to resolve itself. It is refusing to resolve itself in Lightroom 5.2 however. I've searched on the web for similar problems, and have found some responses to blank map screens in Lightroom 4, but they are so technical I haven't got a clue where to start trying to follow them.
 
So, I am a simple soul who needs a simple answer. I am using LR 5.2 on an HP laptop running Windows 7. In the map module, where I already have GPS data (from a Canon EOS 6D) it is displayed in the metadata, and the little pop up box shows the number of photos at selected locations etc. But the central map screen is black. If I search, the screen stays black although it appears as though it has gone to the location. The Navigator screen is blank too.  And yes, I am connected to the internet and LR5.2 seems to be able to find the internet (I checked by going into the web module).
 
I like to put GPS locations on my photos prior to upload to Flickr, and whereas they are there from photos from my 6D, they don't exist for photos taken on my Canon Powershot.