I had something weird going on with my Hikvisions.
What was going on after installing my snow camera it kept factory resetting every 30 hours or so. Almost like the reset button was stuck in on camera. So I put a different camera in also new and it did the same thing. So decided must be cable or power supply so changed both out.
Didn't help kept going back to factory rest. I did everything like changing IP address, password, Cat5 cable and even power supply but nothing helped.
So decided to add another camera ( older spare I had) and not make the snow camera my last camera installed, now this camera was doing the same factory reset just like before.
I started thinking maybe I'm hacked so turned off UPnP and updated my Windows patches and it stopped.
It's been 4 days now without any reset. I've scanned for virus/trojans with multiple programs including the premium version of Malwarebytes and can't find anything.