Vostro 470: Unrecognized Bluetooth Devices

Hi,

Vostro 470, Windows 7 64 bit

I have 2 unrecognized Bluetooth devices in Device Manager under Other devices:

Both devices listed as Bluetooth Peripheral Device

Both devices have this error: The drivers for this device are not installed. (Code 28)

Hardware ID for device #1 is:
BTHENUM\{453994d5-d58b-96f9-6616-b37f586ba2ec}_VID&00010075_PID&0100
BTHENUM\{453994d5-d58b-96f9-6616-b37f586ba2ec}_LOCALMFG&0045

Hardware ID for device #2 is:
BTHENUM\{936da01f-9abd-4d9d-80c7-02af85c822a8}_VID&00010075_PID&0100
BTHENUM\{936da01f-9abd-4d9d-80c7-02af85c822a8}_LOCALMFG&0045

I have installed the latest available driver for my system from support.dell.com:
Dell Wireless 1703 Wi-Fi + Bluetooth Driver
Version 9.2.0.514, A00
http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=C54GH

Windows Update cannot find the drivers either.

What are these devices, and can anyone help me find the correct drivers?

Anybody know how to decipher a BTHENUM?

Thanks