Bluetooth drivers

[Cornish Jack]

HP SFF desktop running W7 64bit Pro, 8 Ram, 2T HD. Attempting (for the 6th time to install a working Bluetooth usb adaptor - and, yet again, "driver installation failed". Various labelled makers (but probably all the same) and obtaining/installing drivers either fails or leads to dubious scam-like processes.
Please, Please, pretty please, does anybody know of a guaranteed plug-and-play adaptor/driver combination which would suit the above spec.? :{
TIA

[Saab Dastard]

Windows 7 has been out of support for the best part of 2 years. The real answer is to move on, either to Win 10 (or 11) or move to Linux. Don't expect any 3rd party support for Win 7, whether that's hardware drivers or software.