About a year ago I started having these problems with the Windows Media Player Thumbnails. At first, an Album thumbnail became black and even after deleting the AlbumArtSmall.JPG and Folder.JPG files, WMP kept restoring the Black Thumbnails instead of the original WMP ones.

I thought that once I reinstalled Windows it would all come back to normal and then I transferred the files over to Windows again, but once I did, the same folders kept having the same problems. I already tried deleting the JPG hidden files, but they keep coming back as black ones. I already tried deleting the folder and creating a new one to where I transfer the files, but it eventually becomes Black again.

Honestly, I tried everything. Nothing works. Is there a way to restore WMP thumbnails as they are meant to be? Or are my files the problem? However, even new music I download eventually becomes like that as well!

P.S. I recently uploaded these files in a MEGA account and the AlbumArtSmall.JPG and Folder.JPG files appeared there, even though they were hidden when I uploaded the folders.