My tablet when opened says: unfortunately. What can I do?

[AC Question]

my tablet when opened says: unfortunately

Samsung galaxy tab S pro 8.4 android 5.0.2 I have rooted it, i opened it and it worked perfectly, then restarted and like in the titel (upside my question). PLEASE help me!!!!!!!!!!!!!!

 

[FF22]

I don't know about rooted tablets but can you try reversing the process and reloading the original OS? I believe I've read threads about trying that? Also, this reply will bump your thread.