Suddenly most of the files and folders in my sd card are now named "FSCKxxxx.REN". How to fix this without root?

I connected my phone using USB in **Mass storage mode(MSC)** to a **HUMAX** TV receiver, and after I disconnect the phone, when I opened the sd card in a files explorer app, all of the files and folders were named "FSCKxxxx.REN" except 8 folders and 3 files also the folders that are named "FSCKxxxx.REN" contain files named "FSCKxxxx.REN", and it looks like that the original size of the files didn't change. What is the cause of this problem, and how to fix it, is it even fixable without root? I searched for before I ask, but I couldn't fix the problem, maybe because I don't have root.