Windows 10: Installing windows 10

I bought Windows 10 home edition from Best Buy. Apparently Microsoft punishes you if you don't buy it from the Microsoft app store by selling you a product that is unusable. My computer will boot from the USB thumb drive that came with the product key. After "setting things up" I get the following message: "We are unable to verify the product key" Their on-line help tells me to go to the start button and then go to "update and security"... THIS OPTION DOES NOT EXIST. Every on line solution ends up sending me to a non-existent folder or button or choice. I'm trying to upgrade from windows 7. Of course, now that I've opened the package I can't return it. So now I have to pay for Windows 10 even if I have to stay on Windows 7. Is this a MIcrosoft scam to steal your money?

:)

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

Is it time for Windows 10 already?

Here's a good step by step guide on doing a fresh install.

How to clean install Windows 10 from a USB drive - Software - Feature - HEXUS.net

 

Installing Windows 10 on New PC?

I'm going to be building a new PC on Christmas and want to install Windows 10 on it. I have Windows 10 on my current PC, which I installed upgrading from 8.1 with the files on a USB. How do I go about installing a clean copy of Windows 10 on this new PC? I think I recall something about installing it once makes Microsoft recognize your hardware, but since this will be a PC I'm not sure what steps I need to take. Do I need to go 8.1 -> 10 or is there a method of going directly to 10?