Originally posted by another user
With Windows Anytime Upgrade, you can add new features to Windows 7 and do more with your PC. It’s easy, quick,no disks, no delays—and no leaving the house. With Windows Anytime Upgrade, you can upgrade to a more advanced edition of Windows 7—say from Home Premium to Ultimate—in as little as 10 minutes. That way, you get to take advantage of extra features while keeping your current programs, files, and settings intact.
Tutorial:
How To Upgrade Windows 7 using Windows Anytime Upgrade
1. Click on Start, then type in anytime upgrade into the search box and click on Windows Anytime Upgrade to get started.
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2. Now just follow the instructions to upgrade to a new edition of Windows 7. First, click on Go online to choose the edition of Windows 7 that is best for you.
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3. In the same dialog, you’ll get a list of the different versions along with a nice table of features for each. This is also a great way to compare the different versions of Windows 7 and actually see what the differences are.
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4. You can also click on the tabs across the top to see the features of each version separately. Once you buy a new version and have an upgrade key, click on Enter an upgrade key.
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5. And that’s pretty much it! After you enter your key, Microsoft will confirm it and all the new features of the higher edition will be available immediately! No need to download anything or install any extra software. Enjoy!