Computer not recognizing Bluno - no COM port/unknown device

Computer stopped recognizing the Bluno/ unknown device in Device manager. e.g. I have been using it for the past two days and was previously successful at programming and running simple projects with the Bluno. However, yesterday my computer stopped recognizing the Bluno. When plugged in the orange "on" LED turns on and the green "L" LED blinks three times. The orange LED stays on indicating it has power. The computer (Surface Pro 3, Windows 10) does not recognize the device in any COM Ports and it is not seen as an unknown device.