Can't connect Samsung phone to PC My SM-J701F (Android 7.0) stopped connecting to any PC after a failed root attempt using KingRoot(PC). I have been using the official Samsung cable, and the phone used to connect just fine before i tried Kingroot. Now the phone just charges itself after being connected via USB. 
I've tried setting USB config as MTP, installing MTP drivers in PC, uninstalling phone drivers from my PC, changing cables, changing PCs themselves- nothing works. Neither the PC nor the phone detects any connection. 
The phone can't be rooted now, so I can't find a way to restore it to a previous backup either.

Please help.
Just use ODIN, reflash that phone and be ready to go from official firm again. Simple. Or if you want a complicated way of getting that done you can say so that imma show you