Right click pop menu is very slowly

Today,when I open my computer,I found when I select a file and right click on it.the pop-up menu display very slowly,then I google and google it,finally,I know what's wrong with my system.The course is I'd ever run an application in another network computer,and now this computer has shut down.So when I select the file,windows always search the net work computer,so it's slowly.To resolve this problem,please run the command:'regedit',and then search the key words "\\".find them look like "\\111.111.0.1\filea\setup.exe" and delete them.