Win7 system how to set opera browser as the default browser

1, Win7 computer in the double hit Open this opera browser, in the open window to click on the upper left corner of the opera icon, this will appear a new menu, in the menu to choose Settings Options;

2, then the screen will pop up Opera browser Settings window, in the right search column can see the current default browser is which one;

3, directly click on the triangle behind the symbol, and then in the Drop-down menu appears to choose Opera Browser, and finally click the bottom of the window to determine the save settings on it.