memory stick issue
Bought a new memory stick to back up files from my old pc and transfer to either laptop as & when required. doc files and other document formats fine, photos fine, video files not fine! They all save to the stick ok but when plugged back into any machine at a later date some of them can't be "seen" at all, no icons but the memory is still used to store the data just the same. I've tried the "repair" facility (whatever that does) and reformatting the stick but it makes no difference. Is this a duff stick or is there something obvious I've overlooked? Thanks for any advice you may have. Btw I use vlc player on the old pc would that make a difference?