SD card..autorun.inf


so I have some data on my sd card which I cannot open on the PC.. the card itself works when I put it in to my video camera and it plays back the data, I just cant see it on the pc?

i see "e" drive, click in to it and it seems like the files are hidden, in my virus chest I have autorun.inf, gekh.exe and mcmlwk.exe, could any of these be impacting on the device?

ive managed to copy all the data to the desktop but again I nothing even though the size is 20gb?