Hi Guru, thanks for your quick inputs.
I already did (several) times your process up to the point where you suggested to install the Bluetooth driver from the manufacturer's website. The reason being that following the link no driver can be found. Only users' manuals are listed there. I checked
that from another computer too. By the way at the moment I use USB radio for connecting my Logitech keyboard and mouse, but wanted to change for Microsoft Bluetooth Desktop 7N9-00012.
For easy surfing and messaging I just bought CSL mini PC on a stick (link below for more information)
https://www.csl-computer.com/shop/product_info.php?products_id=10956&cPath=198&XTCsid=j7ghn6bkr7q6gia3fc5rkohug5
In brief
Edition: Windows 10 Home
Processor: Intel Atom CPU Z3735F @ 1.33GHz 1.33GHz
System: Type: 32-bit operating system, x64-based processor
Manufacturer: CSL Computer GmbH & Co. KG
I also downloaded and installed the driver from CSL webpage - no success - however I did exactly that you proposed in terms of process.
https://www.csl-computer.com/shop/shop_content.php?coID=11
I tried both SN_1508XXXX and SN_1510XXXX
Thanks for your feed-back & Regards
Peter