When you use a Microsoft Surface 2 device, you are prompted to enter your BitLocker recovery key after you turn on or restart the device or you resume the device from the sleep state. These messages may be random or they may occur every time that you try to restore the device to operation.
Note These BitLocker-related messages are the only visible symptom. This problem does not affect your system in any other way.
To resolve this problem, install an update that is now available for the Microsoft Surface 2 device.