I can't fix this due to distance, not there issues. Let Samsung do their thing. If they fail, time to shop for a working system.
Tip. Here I use Dropbox to shuttle things over. Works for me.
I am using windows 10 pro, avast anti virus free edition installed. I am connecting my samsung galaxy j7 to my PC through USB connection. MTP is enabled in my phone.when i open with my computer the SD card hangs while creating or renaming a folder.Samsung kies 3, smart switch installed but i am not able to connect using samsung kies 3 too.it seems many users having this problem. pls help me to resolve this.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic