Make sure that the monitor is connected to a video port that the recorder can use. Video ports for connecting monitors are specified in the technical data sheet of the registrar. The passport is delivered with the registrar. Passports of current DVR models can be downloaded on the official website.
Non-fatal system failures
Errors that occur when the server is updated incorrectly or related to other problems (incorrect shutdown, disabling the USB flash drive with the image when the server is running)
Perform image recovery via Integrated automatic rescue system