i plug my usb into my computer and immediately a pop up comes up telling me that I have to format my usb before I can use it. I click format and then it comes up with another pop up which I presume is the format window. I then click format and it comes up with "windows was unable to complete the formatting." one I click 'ok' it then comes up with another pop up saying "check to see that your disk and drive are connected properly, make sure the disk is not read-only and then try again. For more information, search help for read-only files and how to change them". I have searched that and nothing has came up. I really need to get this usb working because it was quite an expensive one I got for Christmas and I really need it for school!