1, first open the Control Panel, select the default program;
2, choose to set the default program;
3. Select an application in the left pane and click to choose the default value for this program;
4, you can select the file type associated with this program;
5, back to the Control Panel, the default program interface, select the file type or protocol associated with the program;
6, select a file type to change, and then click on the top right corner of the change program;
7, the following window will appear, you can choose which program to use to open the file type;
8, another mode of operation, select a file, right-click the menu in the open way, you can choose to use which program to open such files.