Check camera itself work or not, cover the IR cut sensor, you will see red light here,
if with red light which means camera can work, if no light which means camera doesn't power on
please exchange a working power adapter to check again
2. After confirm camera work, please right click NVR mouse choose Diagnostics of cameras status, if cameras shows Connetcd Failed, pleasea go to Camera setup page, delete this camera
3. Press camera reset button about 10s, click Continue, wait for new IP address show up, then click Continue, if no IP address show up click Search again