Short Story:

I have two computers:  Sony laptop( laptop1) and Dell laptop(laptop2 ). I buy a Windows 8 Pro  to upgrade my Dell laptop. The problem: At some point, I must have entered the license key on my laptop1, because when I go to the activation screen on my laptop2, I get this:  I can’t use the key on my laptop2. Now how the hell do I transfer the key from my laptop1 to my laptop2 computer? Answer: The problem here was getting in touch with a local support person at Microsoft. But I finally got in touch with someone capable, and here’s what we did: We first opened up the activation prompt:     Press Win + R  -->; Type slui 4 Or Win +W + “Click Activate”. Or click your account icon and click the account settings.  I tell him all the numbers(step2 in pic); after that, he gives me the corresponding numbers to enter( step3 in pic). The installation is now activated. Thanks to Microsoft