Now select Uninstall a program (if you have the settings sorted by Category)
Programs and Features (if you have the Icon view)
Select the View installed updates option in order to make it appear on the list
When the Program list has been populated, scroll down until you find Internet Explorer. Select it and hit the Uninstall button. (when the uninstall completes you will be prompted to reboot your system)
After the reboot, go back to the Control Panel (Step 1) Internet Explorer should be listed as an optional update.