Bizarre Bluetooth driver problem (Code 18 and Code 28 error)

[SAL2014]

I am completely stumped by this problem. I will do my best to explain it and see what you fine folks can do.

I had an older bluetooth dongle, off-brand model, 2010-2011 year, that I installed on my new desktop computer. It worked, but sound quality on my Sony Dr-BT101 headset wasn't great. It worked well with my bluetooth-enabled phones and tablets, so I suspected the dongle. I bought a CSR8510 dongle, which came with a CSR Cambridge Radio Harmony software stack. I installed the software, and turned on the headset, paired it, but no sound came out of the headset. I went to Sound, saw no entries. Went to device managers and saw the parts in yellow. I tried to update the driver but all I got was Code 18 error and this weird message in the picture. I clicked on properties and saw this message.

The drivers for this device are not installed. (Code 28)

There is no driver selected for the device information set or element.

I am stumped. I've tried uninstalling, re-installing, installing other Bluetooth drivers, waving a magic wand, none of it has worked. I'm thinking it's a problem with the Registry, but I am not sure how to proceed.

Any ideas?

 

[Gandalf]

Give this a try. It's free.
https://www.slimwareutilities.com/slimdrivers.php
You do need to resolve those Other devices category issues.