hard reset

Does any body know why my imporx dome camera stopped responding to hard reset option? It stopped sending emails as well. no reset button what can I do?

Morning everyone - I am brand new to the CCTV world and reaching out to this forum out of frustration. I bought a second hand DVR 7616HI-ST and 6 new DS-2CD2022WD-I camera, cable, network switch. During my "struggle" to activate the ip cameras, I started to experience password issues. I then...