Files on flash drive won't open.

Hello friendsI had put some photos and videos on my flash drive. When I first burned these files to the flash drive, they opened without any problems, but now that I checked, I saw that the files are there, but the size is set to 0 KB and they still don’t appear, or they come and go for a moment and are actually unusable. Do you have a solution?

I assume this is a USB Flash Drive. Have you tried using it in a different USB port.