Changing password of the IPC without knowing the old one

[markul11]

I have connected a new IPC to an old NVR (DHI-NVR4216-4KS2) and NVR initialized the IPC, including setting the password.
There is a setting on NVR for a device password, which I assume is given to all auto-initialized devices, but I don't know it, I only have general admin password of the NVR, which was installed by someone else long time ago.
I would like to change some settings of the camera, but since it has been initialized I can't login to it any more with the factory defaults.
If I will change the device password on NVR, will NVR give it to all the cameras, or will I loose connection with them?
Is there a way of uninitializing the IPCs, so I will be able to set a new password and send it to the IPCs?

 

[Underhill]

Find and hold the factory reset button or if you have dahua support they can any desk in and reset it.

 

[markul11]

Find and hold the factory reset button or if you have dahua support they can any desk in and reset it.

Thank you for the answer. Do you mean reset button on IPC?

 

[Underhill]

Yes