try mo rufus, google m n lng tutal freeware naman yun, look mo din kc baka nka write-protect usb drive mo. at pag di p dn kinaya ng rufus malamang my tama na yan usb drive mo.
try to reformat daw gamit yung disk management . kung ayaw parin try to format gamit yung cmd ( diskpart ) , kung ayaw pa rin gamitan mo nang low level format tool . kung ayaw talaga no choice po kayu bili na lng nang bago .