I bought 2 Dahua IPC-HDW4631C-A hooked up through Netgear POE switch. Initially ran into trouble as they both had the same IP, so switched one and they worked for a day, then one does not show up at all and won't initialize. Unplugged my router to see if cutting the power and letting it restart would fix it but now both are not showing up on the network. Anyone have any ideas on how to fix this? Both cameras are receiving power and have red light on.