If PWR light is solid or ON
The DVR is receiving power from the power adapter and power outlet; however, this may not determine whether it is sufficient.
If PWR light is OFF or flashing
This means that the recorder may not be receiving sufficient power from the power adapter or power outlet. Please see Boot Failure or Rebooting DVR – Swann
If HDD light is solid or ON
A solid HDD light means the HDD is detected with no activity.
If HDD light is flashing
If the HDD light is flashing, it is being accessed or is recording an event at the moment.
If HDD light is OFF
If the HDD light is off, it means the HDD is either not detected or the DVR/NVR is not receiving sufficient power to make the hard drive work.