If communications betwwen cell phone and computer fully work this is only small installer issue.Make sure you have the newest drivers HP Compaq 6715b Notebook PC*-* Support Software for HP Integrated Module with Bluetooth Wireless Technology (Microsoft Windows Vista) - HP Business Support Center
If yes and still the you have the same problem you have to modify installer this means you have to modify *.inf file in installer add Hardware ID of orphans and again install
Reading Hardware ID
Open device menager
right click on empty devices>>properties>>details>>find Hardware ID
read it and post here.
Suppose these missing devices have following hardware ID
1.Unpack InstallShield installer (just double click on it),choose location for unpacked files.
2.Navigate to Win32 folder (if anybody have x64 system then have to choose Win64 of course) and find btwavdt.inf
find [WIDCOM] section,next find BTWAUDIO subsection
and add line in following rule
Above examples in hacked btwavdt.inf looks
Save hacked file.
3.Uninstall drivers for bluetooth and install the hacked one.