I was using my DS3 controller with a USB connection, and it worked.
I was trying to uninstall everything related to the DS3 controller in order to try and install again and get the BT working. I was using the guide here:
I have a desktop, with a USB BT dongle from Baseus:
I was trying to uninstall using the "Driver Store Explorer", so I deleted everything related to nefarius in there, including the ".inf" files (2, DS and filter).
Afterwards, things got problematic. My BT isn't working and under "Bluetooth and other devices" it's written under the "Generic Bluetooth Adapter" that there's an error with the driver.
Also under Device Manager, there's this error:
And in properties it's "(code 32)" (my PC isn't in English so I'm not attaching a picture).
I of course tried to right-click and uninstall the driver, then reconnecting it and all, but it didn't work.
I use the BT adapter to connect my speakers, so they aren't working of course, basically my computer has no BT now.
I also noticed under "Bluetooth and other devices" that I have a driver problem under "CORSAIR Lighting Node CORE" but I don't know if it was there before or just now. Maybe it's related so I'm metionting it.
EDIT: I uninstalled an erroneous USB input device from device manager, and the Lighting Node CORE reintsalled itself and now is ok. (The BT problem remains)