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Posted: Apr 23 2014, 11:21 AM
Member No.: 1
Joined: 25-July 10
Upgrading Windows with only a product key
If you bought Windows 8.1 or Windows 8, you can download and install Windows from this page using just your product key. You'll have the option of installing Windows now, later or using media with an ISO file.
Before you begin:
Make sure that you're on the PC you want to upgrade. If you're updating to Windows 8.1, this PC must be running Windows 7 or Windows 8.1 Preview. If you already have the latest version of Windows 8 installed on your PC, you can update to Windows 8.1 in the Windows Store for free.
If you're upgrading to Windows 8, this PC must be running Windows 7, Windows Vista, Windows XP with Service Pack 3 (SP3), Windows 8 Release Preview, Windows 8 Consumer Preview or Windows Developer Preview.
Windows Setup checks that your PC meets all system requirements before it installs Windows 8.1 or Windows 8.
Have your product key handy. You can find it in your online order information, in the confirmation email for your purchase or on the DVD packaging. The product key is a 25-character code that looks something like this:
XXXXX- XXXXX- XXXXX- XXXXX- XXXXX.
Make a back-up of everything you want to keep. Save it somewhere where you can get to it later, like an external drive or a DVD.
Don't format your hard drive before installing Windows. Your current version of Windows must be running when you begin installing Windows 8.1 or Windows 8.
When you're ready, tap or click Install Windows 8.1 if you have a Windows 8.1 product key, or tap or click Install Windows 8 if you have a Windows 8 product key.