Hi Joe_HP83,
I am unable to determine exactly which Bluetooth module that it is. I have included a link to all available Windows 8.1 Bluetooth drivers for your model of notebook.
Broadcom Bluetooth Driver for Microsoft Windows
Qualcomm Atheros QCA9000 Series Bluetooth 4.0+HS Driver for Microsoft Windows
You can determine exactly which one it is by referring to your Programs and Features, and see if one of these is listed already. If not, you can start the process of recovering the original drivers. Just to get the listing of the drivers installed. You don't need to complete the process, as you are just doing it to find the name. I have included the document 'Using Recovery Manager to Restore Software and Drivers (Windows 8)
If the name of the Bluetooth driver does not match the ones that I have included. Please provide me with the full name of the Bluetooth driver.
Thank you.