My apologies for write here this subject but I couldn't find out other place to do that, and I want to warn to the Support about this problem.
I have a Lenovo laptop, model G70-80.
Windows 10 Home as OS.
After the latest update of Bluetooth drivers and PROSet/Wireless (v 20.100) the Bluetooth port and technology dissapeared from the system.
I had to reinstall the system to get it back up and running.
I have tried this installation three times with the same result.