Some time, our IE will be revised by the human to be equipped with the graduation examination password, once has been established the graduation examination password, even if will install IE also not to have usefully. How to manage? Can format the hard disk? Does not want! Here I have good means that helps you to solve this problem
　　Enters the registry, found HKEY_LOCAL_MACHINE \ Software \ Microsoft \ Windows \ CurrentVersion \ policies \ Ratings, here had named “key” the principal linkage, this was the graduation examination password which you established, deleted directly it then. After starts, the click “the tool” -> “the Internet option” -> “the content” -> “the graduation examination”, you will discover that the graduation examination password was already repositioned. Now so long as you input the new graduation examination password then.