检查注册表中HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer分支下是否有NoViewContextMenu这个DWORD值，有的话就删除这个键值，然后注销或者重启。
解决“桌面右键菜单打开慢”方案
新建记事本，里面输入
@ ECHO OFF
@ ECHO.
@ ECHO.
@ ECHO.
@ ECHO -----------------------------------------------------------------------
@ ECHO
@ ECHO
@ ECHO
@ ECHO -----------------------------------------------------------------------
PAUSE
regsvr32 /u /s igfxpph.dll
reg delete HKEY_CLASSES_ROOT\Directory\Background\shellex\ContextMenuHandlers /f
reg add HKEY_CLASSES_ROOT\Directory\Background\shellex\ContextMenuHandlers\new /ve /d {D969A300-E7FF-11d0-A93B-00A0C90F2719}
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v HotKeysCmds /f
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v IgfxTray /f
保存为“清除所有多余的桌面右键菜单.bat”
运行即可解决大部分问题
