Stopped on the logo interface after rebooting and there was no response at all.
1. Please change the power supply, use another working power supply and check if it works normally or not. If the power is broken, the power will be insufficient, resulting in the system unable to run.
2. Please don't connect your camera system to your wifi router and then check it working or not
3. Please remove the hard disk (also don't connect NVR to wifi router, only connect a monitor), and then restart NVR, check it working or not.
Check your camera system according to the above steps, if still not working, please use software to restore the camera system to the factory Settings
(8CH is "K9608","k8208" and 4CH is "K9604","k8204")
"K9608" and "K9604": https://drive.google.com/open?id=19RkYD5HfwnrsYnBPI4uoe1M3MHKSK4XO
"K8208" and "K8204": https://drive.google.com/open?id=1flAxtP0kJyfJRaXB7OZPYAWNsXHp3tPR
Reset the NVR via USB disk:
3. The file on the USB disk only takes effect once. To re-operate, you need to re-copy it.
If still not working, please send email to us.