Click [Start]-> [Run] command opens the "Run" dialog box, enter "regedit" in the dialog box, and press enter to open the "Registry Editor" dialog box. (2) Expand the "HKEY _ Class _ Root \ *" item in the dialog box, create a new subitem under it, and then create a new subitem under the subitem "Shell". (3) Set the default value of "OpenWith" as "open mode" in the right window, create another "command" sub-item under "OpenWith", and set its default value as "c: \ Windows \ rundll32.exeshell32.dll, openas _ rundll% 1" in the right window, and confirm.