you dont need a suggestions or ideas, you need to fix your usb hehe", ill give you two solutions on how to fix your usb.
the first is, format your usb using this software
http://rapidshare.com/files/402955804/SP27608.rar.html
i used rapid share temporarily because my fileden account was bandwidth exceed.
second solution is, you need to know the brand of your usb like for example transcend then go to the site of transcend and find the software for formatting usb. i tested this and 100% working",