Step 1: Enter NVR Username and Password.
Step 2: Click “Login”.

Step 3: Click “MAINTENANCE”.

Step 4: Click “Manager”.

Step 5: Click “Default”.

Step 6: Click “Default” and all the parameters will be restored to default settings except network, user management and so on.

Step 7: Click “Factory Defaults” and all the parameters will be restored to default settings.