Last night I was working with a word file stored in my markvision 2gb usb drive, and suddenly when I tried to save my work the drive sttoped working.
I looked ate the usb devices icon and it dissapear as if no usb devices were connected. I tried to plug the drive again and nothing happened. Also tried on other computers and nothing.
Strange problem, but I would try reinstalling any software you recieved wiht the USB drive, and btw i have never heard about Mark Vision USB drives, and google searches all direct me to Spanish sites (I'm US). IMO i would get a better USB drive from a manufacture such as Kingston or PNY.