北京bj40是什么发动机:文件夹打不开

先删掉助手
点击“运行” 输入 "msconfig" 回车
在里面找到“启动”并选择“全部启动”
或者“加载全部启动项”
后重启

重装系统或者是将用雅虎关掉的程序再开起来

删掉雅虎，要彻底！

楼上说得对，雅虎不用装。

我有同感，雅虎助手真的很垃圾，赶紧卸载！
如果还是不行，把你的系统还原到安装雅虎助手以前的状态。如果还不行，系统可能紊乱了，为省心，建议重装。
下载个超级兔子吧，很安全，很好用

文件夹打不开
请把一下部分保存为folder.reg 双击导入 重新启动应该就可以了

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Folder]
@="资料夹"
"EditFlags"=hex:d2,03,00,00

[HKEY_CLASSES_ROOT\Folder\DefaultIcon]
@=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,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,\
65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,33,00,00,00

[HKEY_CLASSES_ROOT\Folder\shell]

[HKEY_CLASSES_ROOT\Folder\shell\explore]

[HKEY_CLASSES_ROOT\Folder\shell\explore\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,00,45,00,78,00,70,00,6c,00,6f,00,72,00,65,00,72,00,2e,00,65,00,78,00,\
65,00,20,00,2f,00,65,00,2c,00,2f,00,69,00,64,00,6c,00,69,00,73,00,74,00,2c,\
00,25,00,49,00,2c,00,25,00,4c,00,00,00

[HKEY_CLASSES_ROOT\Folder\shell\explore\ddeexec]
@="[ExploreFolder(\"%l\", %I, %S)]"
"NoActivateHandler"=""

[HKEY_CLASSES_ROOT\Folder\shell\explore\ddeexec\application]
@="Folders"

[HKEY_CLASSES_ROOT\Folder\shell\explore\ddeexec\ifexec]
@="[]"

[HKEY_CLASSES_ROOT\Folder\shell\explore\ddeexec\topic]
@="AppProperties"

[HKEY_CLASSES_ROOT\Folder\shell\open]

[HKEY_CLASSES_ROOT\Folder\shell\open\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,00,45,00,78,00,70,00,6c,00,6f,00,72,00,65,00,72,00,2e,00,65,00,78,00,\
65,00,20,00,2f,00,69,00,64,00,6c,00,69,00,73,00,74,00,2c,00,25,00,49,00,2c,\
00,25,00,4c,00,00,00

[HKEY_CLASSES_ROOT\Folder\shell\open\ddeexec]
@="[ViewFolder(\"%l\", %I, %S)]"
"NoActivateHandler"=""

[HKEY_CLASSES_ROOT\Folder\shell\open\ddeexec\application]
@="Folders"

[HKEY_CLASSES_ROOT\Folder\shell\open\ddeexec\ifexec]
@="[]"

[HKEY_CLASSES_ROOT\Folder\shell\open\ddeexec\topic]
@="AppProperties"

[HKEY_CLASSES_ROOT\Folder\shellex]

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers]

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers\{0D2E74C4-3C34-11d2-A27E-00C04FC30871}]
@=""

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers\{24F14F01-7B1C-11d1-838f-0000F80461CF}]
@=""

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers\{24F14F02-7B1C-11d1-838f-0000F80461CF}]
@=""

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers\{66742402-F9B9-11D1-A202-0000F81FEDEE}]
@="Version Column Provider"

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers\{7f9609be-af9a-11d1-83e0-00c04fb6e984}]
@="Fax Tiff Data Column Provider"

[HKEY_CLASSES_ROOT\Folder\shellex\ColumnHandlers\{884EA37B-37C0-11d2-BE3F-00A0C9A83DA1}]

[HKEY_CLASSES_ROOT\Folder\shellex\ContextMenuHandlers]

[HKEY_CLASSES_ROOT\Folder\shellex\ContextMenuHandlers\WinRAR]
@="{B41DB860-8EE4-11D2-9906-E49FADC173CA}"

[HKEY_CLASSES_ROOT\Folder\shellex\DragDropHandlers]

[HKEY_CLASSES_ROOT\Folder\shellex\DragDropHandlers\WinRAR]
@="{B41DB860-8EE4-11D2-9906-E49FADC173CA}"

[HKEY_CLASSES_ROOT\Folder\shellex\ExtShellFolderViews]

[HKEY_CLASSES_ROOT\Folder\shellex\ExtShellFolderViews\{5984FFE0-28D4-11CF-AE66-08002B2E1262}]
"PersistMoniker"="file://%webdir%\\default.htt"

[HKEY_CLASSES_ROOT\Folder\shellex\PropertySheetHandlers]