Hello. I bought a new flash drive recently. I've been using it at work a lot, from computer to computer. I noticed that nowadays when I plug it in a desktop/ my laptop and I try to move a large file to/from it (media such as movies, tv shows etc), the computer doesn't recognize it anymore. I see 'Lexar, FAT 32', instead of the blue bar indicating how much space has been used and an error saying the file/s is no longer located on this device. I remove it from the port and place it back in and the same thing happens. It is extremely annoying. What can I do to solve this? Do I need to reformat it?