I have 4 Hikvision IP cameras connected to a NVR. If i have a power loss 3 of the cameras come back on line when power is returned but 1 camera has to be connected to the NVR direct to reset before it will be seen on the network. All 4 cameras work fine and are all the same. The camera i have works fine in any other location it appears to be an issue with the point of connection. Checked cable which is fine, so not sure what to do now.