win7使用以下批处理,在每次关机时候执行,当然你也可以加入计划任务
del %windir%\system32\GroupPolicy\Machine\Scripts\Shutdown\delpur.bat
echo @echo off>%windir%\system32\GroupPolicy\Machine\Scripts\Shutdown\delpur.bat
echo schtasks /Delete /TN Purple /F>>%windir%\system32\GroupPolicy\Machine\Scripts\Shutdown\delpur.bat