Cannot copy certain JPEGs from a SD card

Hello, I am trying to dowload, copy, highlight or drag pictures from My cameras memory card as I always do, and there are 91 pictures is a series of 382 that will not copy. When I go to computer, drive F: I can see all 382 pictures, but 91 of them will not copy, dowload or drag into another folder. It says, cannot open because file may be corrupted, damaged, or unsupported. I also got another message saying file wont open it doesn't exist. well it exists, I can see the thumbnail. Sometimes it wont even try to open it, it will just beep and never open. Other times the ones I know have already copied wont open immediately after I attempted to open one of the 91. Like its a chain reaction. Then when I try to go back to the drive is says insert disk (F:). Ive tried several different ways to get them JPEG files on my computer but they wont go! I can easily scroll through them on my camera. No message about cannot open file. Any suggestions as to whats happening?