ds-7616ni-k2/16p

Hello houston. I got a problem, my nvr is down. No buzzer, no monitor exit, just one red led is lighting on the board. What can i do? Can i fix it? I had tried TFTPD but result is fail. It can not find the nvr's ip.

Anyone here have tried using Dahua IPC with Hikvision NVR? Will there be any issues on it? Planning to add some Dahua IPC to my current DS-7616NI-K2/16P NVR. I found found some smaller model of dahua cam versus Hik camera hence the plan of adding Dahua. Thanks in advance!