abnormal shutdown

Model: Hikvision DS-2CD2432F-IW Firmware version: 5.4.0 build 160530 If the camera does not see packets on the network for a while, 'Network disconnected' and 'Abnormal shutdown' occurs in log. So continuous recording is broken. And it cannot be connected from the web browser. i.e...

Hi guys, I am still trying to figure out what's wrong with my NVR, as it frequently enters a coma. Anyway, I tried extracting information from the NVR log, searching for Major Type "Operation", and Minor Type "Local: Abnormal Shutdown". This is what I found (NVR was installed 15 November, with...