Hi all,

I just upgraded to Windows 8 Pro from Windows 8 beta at $39.99. So I share the upprade steps to you. Anyone who would like to upgrade to Windows 8 Pro, please refer to this tutorial.

Step 1: Download the Windows8-UpgradeAssistant at Microsoft website.

Step 2: Run Windows8-UpgradeAssistant. It will check your system firstly.

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Step 3: Click "order", Microsoft will review you order

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Step 4: Checkout. Filling your billing information

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Step 5: Select payment method.

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Step 6: Fill your payment information

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Step 7: Confirm your order

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Step 8: Order sucessfully. You will get a product key.

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Step 9: Begin downloading.

Note: you will see a shortcut of Windows8-UpgradeAssistant, which means you can pause the download at any time and click the shortcut to re-start download.

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Step 10: Check the download

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Step 11: Install Windows 8.

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Installing Windows 8 would wait for a while.

After installing, you need to restart the computer. Please note that it will check your system while restarting, so it will take a while.

Very nice explanation