Why won't my Note 4 turn on?

[AC Question]

My note 4 has been broken for a couple of months now and I'm getting sick of it. Out of the blue it would keep crashing and rebooting and sometimes it would come up with this android logo that said something like "downloading. do not turn off target". now it's gotten to the point where it wont turn on or even charge. can you help me. I've done a soft reboot, factory re set and everything else I've found online. and i'ts not the battery because i replaced that today hoping it would work but it hasn't and the phone is still unresponsive. please help