i bought my laptop online with windows 10 home activated then i entered a fake product key to get windows 10 pro i got windows 10 pro but not activated may i get back my windows 10 home back
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As said, you need to do a fresh install. You would have to do that by booting from the recovery partition of your hard drive which should hopefully contain a default OS backup. That would mean you would restore Windows 10 Home back and all the apps it came from when it was released from the factory.