Oct 09, · For info about activating Windows, see Activate Windows 7 or Windows Click the Start button, enter Computer in the search box, right-click Computer, and then click Properties. If you need to install or reinstall Windows , you can use the tools on this page to create your own installation media using either a USB flash drive or a DVD. Use the media creation tool (aprx. MB) to download Windows. This tool provides the best download experience for customers running. Jan 25, · If you legitimately purchased and downloaded Windows 8 from Microsoft, you can download Windows 8 or again here, so long as you have your product key documented. If you purchased a retail Windows 8 DVD, you can contact the Microsoft Supplemental Parts team .