(1) Go To Start – Control Panel – Programs and Features
(2) Click View Installed Updates link on the left hand navigation bar
(3) Locate Internet Explorer 9 option on the right hand side panel
(4) Click Uninstall link located on the top of the panel
You will be prompted to restart the system. Windows 7 will automatically update your system after the restart. The entire process will take around 10 minutes depending upon the speed of your CPU.