Windows 10: I install a window 8.1 of Microsoft website but in the problem of product key so I install...

My pc is E6400 and i in install a window 8.1 for Microsoft website one day ago and booting with Rufus but I install a problem of product key I try many product key but it cannot be install. Kindly help me in this situation or send a relevant product key

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Installing Windows 10 using Windows 7 key

Nope, you need to install Windows 10 first and make sure the Windows 7 key is transferred to your Windows account after you've installed Windows 10 (not quite sure how that works). I missed the last step and I could not activate Windows 10 after a re-install... Microsoft seem to have done everything they can to make it a PITA. Also, it's technically too late to do this now anyhow, as the upgrade offer has expired. But KMSPico works quite well...

As for getting rid of Windows, delete the Windows folder.

 

Order History missing the Product key/Install option

I ordered 2 copies of the Windows 10 Home (download) edition from Microsoft's website and I understand Microsoft does not have any record of the product keys, nor do they offer refunds on that type of order.

The instructions given by Microsoft to retrieve those keys is:

1. Go to Order History, find Windows 10, and then select Product key/Install.
   
2. Select Copy to copy the key, and then select Install.
   
3. Select Download tool now, and follow the instructions.
   
4. A wizard will help you through the steps to install. You can install Windows 10 on a PC or a Mac.
   

The problem is that the order in question does not have a Product key/Install option. Is this a bug with Microsoft's website?

 

Legally download Windows 7 and 8

I have a product key that is genuine, is this a retail key? I got it free from my university's dreamspark. If so, I could do a clean install with an upgrade disc (provided at microsoft's site) without any extra steps such as registry editing, etc etc.. ?