The installation of Internet Explorer 9 would affect the early version of Internet Explorer on your operating system. As it replaces the older version of Internet Explorer during installation. Some users may have installed the IE9 beta without knowing this, and some may installed IE9 and are not satisfied with the Internet Explorer 9 Beta and want to go back to a previous version of Internet Explorer. Here is a guide explains how to uninstall Internet Explorer 9 from the operating system so that you can revert to IE8 or IE7.
Uninstall / Remove Internet Explorer 9 to revert back to IE8, IE7
1, Close all programs except Windows. otherwise the uninstallation process maybe not complete.
2, Click Start button, type ‘Programs and Features’ in Start menu search area and then hit enter to open it. From the left pane, click View installed updates.
3, In the list of installed updates, right-click “Windows Internet Explorer 9” and select the Uninstall option to remove Internet Explorer 9 Platform Preview from your Windows 7 / vista computer.. When the IE9 uninstallation is finished, restart your computer.
4, After restart, the previous version of IE installed on your system will be restored. This how you uninstall Internet Explorer 9 from your computer. Please note that this instructions are for the beta of the browser. However, it is likely that it will also apply to the final release of Windows Internet Explorer 9.