How to Activate Windows 7. While Windows is typically set to activate automatically when you install it, you may find a time when you need to manually activate it. Windows 7 is an operating system produced by Microsoft for use on personal computers, including home and business desktops, laptops, netbooks, tablet PCs, To activate Windows 8 or 8.1 via phone system! Please start the Win-8 cmd.exe in administrative mode. Use this solution also for Windows Server 2008 and 2012! If you're wondering how to properly activate Windows 8, read this guide. We also tell you about frequent activation problems e.g. error How Windows Product Activation Works. Windows will prompt you to activate with Microsoft after you install it. When you activate over the Internet, your copy of. To install an upgrade version of Windows 8, you must already have Windows 7, Windows Vista, or Windows XP installed on your PC. If you formatted the drive. Solutions to change the Windows-8 or Win 8.1 product-key to activate Windows-8 with new product key! CONTENT: 1.) Change the Windows 8 or 8.1 product-key via ! How to Activate Windows 8 and 8.1 Online Information A product key is a 25-digit number that's used to activate Windows 8/8.1. Activation Windows 7 Forums is the largest help and support community, providing friendly help and advice for Microsoft Windows 7 Computers such as Dell, HP, Acer, Asus or a. solved I formated my windows xp pro. computer, and when I wanted to activate it again, it said activation and support have exspird wh; solved Do I have to activate my.