Motorola S305 Headphones (Bluetooth)

After upgrading to Windows 8, I can pair my Motorola S305 Headphones but they go offline and won't connect . Any assistance appreciated. Stephen

Change the default playback device to the S305 in Win8 perhaps?
Right click the volume in the system tray.

Thanks duinsel, appreciate your response. Unfortunately the S305 not connecting results in their not showing on the audio devices menu. This was not a problem in Windows 7. When the headphones were turned on they showed up in the audio devices menu and could be set as default. Puzzle is that they pair when installed but go offline and won't go online then or when next turned on.