Start -> type cmd and open Command Prompt. Type "diskpart" without spaces and hit enter. It'll ask for admin permissions allow it and it'll open a new window. There, type "list disk" with space from the listed options pick the usb (Eg - "select disk 1") Then type "clean" and hit enter Then "create partition primary" enter Then "Select partition 1" enter Then "format fs=fat32" enter After that, wait for it to finish and hopefully it'll work