Don't format it...most usb sticks actually have two partitions. That partition that is saying to scan or reformat is the partition that has the usb stick setup files. Open the icon "My Computer" and see if there is another drive listed in there....like drive "K" or something else. Usually once you click on not to format, another windown will open and ask what you want to do with this drive. If the other drive is listed, just click on it to open it and retrieve the files. If it isn't listed, try another usb port or reboot the computer and try again and make sure you have an internet connection to see if there is a driver that is needed.