Phone not turning on at all

So, I got this phone about 1 year ago from my brother(it was his old phone), and I got it repaired about 2-3 weeks ago because the charging port was bent. I charged the phone at the same level as the charger most of the time,and now it won’t respond to the charger at all. I turned it off and did a factory reset, deleted cache and everything. Now when I plug it in it just instantly shows the Samsung Galaxy Note 4 writing and gets stuck there. I can’t do a factory reset or anything else either, and when I take the charger out its just a black screen.