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DVR / NVR: System continuously restarting

If the DVR / NVR is rebooting repeatedly, the issue may be caused by insufficient power or a hard disk drive (HDD) error. Check that the correct power adapter is in use and that the DVR / NVR is receiving sufficient power.

To check the power connection on the DVR / NVR:

  1. Plug the power adapter into a different power outlet. If the power adapter is connected to a surge protector or Uninterruptible Power Supply (UPS), disconnect and plug the power adapter directly to an power outlet.
  2. Ensure that the correct power adapter is being used for the DVR / NVR, and not the power adapter that is intended for a camera or Power over Ethernet (PoE) switch.

If the power connection is correct and restarting continues:

  1. Power off the DVR / NVR.
  2. Disconnect the cameras from the back of the DVR / NVR.
  3. Power on the DVR / NVR.

After powering the DVR / NVR on, the system will stop restarting, or continue restarting. Follow the applicable steps below to continue troubleshooting.

If the DVR / NVR stops restarting:

Disconnect the HDD:

REMINDER: These illustrations are for the LHV2000 series DVR. Refer to your product user manual for product specific illustrations. Click here for downloads and documentation for your product.

  1. Power off the DVR / NVR system and unplug all cables.

    WARNING: Make sure that the system is off and the power cable is disconnected before attempting to open your DVR / NVR.

  2. The DVR / NVR cover is secured with screws. Remove the screws and slide the cover off.

    WARNING: The inner casing of the DVR / NVR has sharp edges that can lead to injury if not carefully handled. Be careful not to let any tools or loose parts touch sensitive components such as the circuit board.

    DVR/NVR Screw Locations

  3. Disconnect the cables that are directly connected to the HDD.

    HDD Connections

  4. Carefully replace the casing of the DVR / NVR and secure the screws.

  5. Reconnect the power adapter and monitor back into the DVR / NVR and power on with the HDD disconnected.

If the DVR / NVR does start with the HDD disconnected:

  1. Use the DVR / NVR user-interface to restore default settings.

    REMINDER: For details on how to restore default settings, see your product user manual. Click here for downloads and documentation for your product. Restoring default settings will not erase recorded video on your DVR / NVR HDD.

  2. Power off the DVR / NVR.

  3. Reconnect the HDD.

  4. Install and secure the outer casing.

  5. Reconnect the power adapter and monitor back into the DVR / NVR.

  6. Power on the DVR / NVR.

If the DVR / NVR does not start with the HDD disconnected:

  1. Power off the DVR / NVR.
  2. Reconnect the HDD.
  3. Reconnect the power adapter and monitor back into the DVR / NVR.
  4. Power on the DVR / NVR.
  5. Use the DVR / NVR user-interface to format your HDD.

    REMINDER: For details on how to format your HDD, refer to your user manual. Click here for downloads and documentation for your product. Formatting the HDD will erase all data. Back up data before formatting.

If the DVR / NVR continues restarting:

If the DVR / NVR continues restarting after disconnecting cameras, restore default settings.

To restore default settings:

  • If the DVR / NVR is configured with conflicting settings, restoring default settings will resolve the conflict. Restore the DVR / NVR to its default settings using the instructions in your product user manual. Click here for downloads and documentation for your product.

    LIMITATION: Restoring default settings will not erase recorded video on your DVR / NVR HDD.

  • If the issue is resolved, the DVR / NVR will stop restarting. You can begin using your DVR / NVR again. You will have to reconfigure your settings, but try to avoid any settings that may have been in conflict before the reset.

If the issue is not resolved by restoring default settings, format the HDD using the instructions in your product user manual.

IMPORTANT: Formatting the HDD will erase all data. Back up data before formatting.