To change a browser to open by default, a user can set the default browser from within the browser itself, but it's often simpler to access it through Control Panel in Windows. The Control Panel contains options for setting default programs for virtually all applications.Continue Reading
To do this in Windows 8, move the mouse to the right edge of the screen and click Settings. Then, click Control Panel.
Click Programs in the Control Panel, then click Default Programs to begin making your changes to the programs you use. Choose the Set Your Default Programs option.
Depending on how many programs you have installed, it may take some time to load the list. When it's complete, scroll through the list on the left-hand side and click the Web browser you want to set as default. From here, set the program as default for all actions, or click the second option and pick specific applications you want to use the browser for.
Save your changes, then exit. Open a file that you associated with the web browser, such as a cached page. It should open using the default browser you selected.