Internet Explorer stopped working because some of the files of IE browser is corrupt .This is not done intentionally this just take place due to a virus or other malicious which get installed to your computer accidentally .To resolve this problem Internet explorer has inbuilt program which can fix this problem very easily. Follow the below steps to fix it:
Step 1:Click on Start,then on settings,then control panel and at last click on add/remove Programs.
Step 2:Search for Internet explorer in the list and then click on it.
Step 3:Click on Uninstall/Remove.
Step 4:In the Next dialog box choose on uninstall & then click on continue.
Step 5:When you are done with all process you will be asked to restart the PC.