台式电脑/笔记本电脑
或复制打开该链接进行修复：http://zhuanjia.baidu.com/detail?pid=1142top，修复完成后验证是否有新建公文包选项。
点击桌面空白处右键，选择【新建】→【文本文档】：
Windows Registry Editor Version 5.00[HKEY_CLASSES_ROOT\.bfc]@='Briefcase'[HKEY_CLASSES_ROOT\.bfc\ShellNew]'Command'=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\ 74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,\ 00,75,00,6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,\ 25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,00,5c,\ 00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,79,00,6e,00,\ 63,00,75,00,69,00,2e,00,64,00,6c,00,6c,00,2c,00,42,00,72,00,69,00,65,00,66,\ 00,63,00,61,00,73,00,65,00,5f,00,43,00,72,00,65,00,61,00,74,00,65,00,20,00,\ 25,00,32,00,21,00,64,00,21,00,20,00,25,00,31,00,00,00[HKEY_CLASSES_ROOT\.bfc\ShellNew\Config]'NoExtension'=''将以上代码复制到新建的【文本文档】里面，点击保存后关闭：
点击【文本文档】右键选择【重命名】，输入“aa.reg”(只要以'.reg'为后缀的任意名称都可以)，弹出提示后点击【是】，双击运行【aa.reg】文件，一直按【确定】结束，然后重启电脑验证：
若以上方法无法解决问题，可以在【百度电脑专家】提交你的问题。