Best answer: If you have Windows 10 Home, you can upgrade to Windows Pro by buying a "key" on the Microsoft Shop website for $99. Upgrade was simple for me, took about an hour uploading and restarting many times. There are many places to buy an upgrade key besides Microsoft. Dell does not offer an upgrade key, but search on Amazon, CNET, eBay, and there are many ways to get an upgrade. You do not need the whole Windows 10 Pro software, just the upgrade Key. Windows 10 Home upgrade commands are in the Settings menu, Activate section. Click Activate with new key, enter the new Windows Pro Key, and the upgrade begins. Quite easy compared to Windows 7 and previous Windows editions, actually.
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