New bluetooth headset not connecting

I have a a Dell Latitude E7450, running W7 Pro (64 bit). I recently bought an August EP650 bluetooth headset and tried to connect. It does not. It is recognised in 'Devices and printers' and drivers are installed and when I go to 'Sound' I can see it, but it is disconnected and nothing can make it connect. 

I searched the internet for 2 days and tried various things. I understand I have to go to 'Device and printers' -> right click and select 'Service' and click on 'Listen to music' or 'Forward VoIP to Handsfree'. I click on 'Listen to music' - nothing happens. No message, just nothing. I checked 'Properties' -> 'Services' and 'Headset' is selected as a Bluetooth Service. I tried everything suggested on forums.

I went to Dell drivers and could see a new bluetooth driver issued on 01.08.17. Downloaded and installed it. The fun started then as the headset would not install correctly, I hade like 15 issues with 'Bluetooth Peripheral Device'. Nothing I did installed the correct drivers for 'Bluetooth Peripheral Device'.

I gave up and called Dell, but they see it as a software issue (yeah! their software!!!) and want to charge me the earth for helping me with no guarantees.

I found the restore point and rolled back to before I installed the new drivers. Device manager is now not complaining, but still nothing works.

BTW - the headset connects to my mobile no problem. So nothing wrong with headset. Dell driver issue  or something...

Any suggestion would be very helpfull as I am going potty. Headset is only usable as wired, which defeats the object of the exercise.