• Disconnect HDD and boot NVR. If NVR boots without HDD, then HDD has failed or is not compatible.

There are following possibilities:

  • Input voltage is not stable or it is too low.
  • HDD malfunction or something wrong wit the ribbon.
  • Button power is not enough.
  • Front video signal is not stable.
  • Working environment is too harsh, too much dust.
  • Hardware malfunction.