1. First of all, we open IE browser in our Win7 flagship computer, and then click the Tools-internet option in the upper toolbar in the open window so that you can open the Internet Options window of IE browser.
2. In the open window, we click to select the browser history of the deletion button in the column, and then in the pop-up window, we have all the options checked, click OK, and then in the confirmation window click the "OK" button on it.
Once we've done that, we'll be able to clean up the cached files of IE on the Win7 flagship computer.