IOBluetoothHCIController missing + Bluetooth not working - WhatToDo?

Hello,..
My bluetooth devices are not working,
The BT menu topright says bluetooth not available.
On verbose-boot I see the message:
IOBluetoothHCIController missing Bluethooth Controller Transport
Can anyone suggest how I can fix this without reformatting my boot-drive and reinstalling Mavericks?
thanks for any help
-shawn

Boot into recovery mode and simply reinstall the OS. No need to erase and reformat.

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IOBluetoothHCIController missing + Bluetooth not working - WhatToDo?

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