Windows 10: new pc have unactivated windows

I have a not activated pc i have windows installed everything running smoothly but i don't wanna spend 130 on a new windows download just to use the code is there a way to buy just a activation key from Microsoft. I have windows 10 home

:)

 

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

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

Using unactivated windows copy

Hello, I built a pc in a shop and the vendor told me he applied windows 10 to my hardware, then months after that windows told me that the license expired or something like that, and now my windows is unactivated. My question is, is it illegal to use unactivated
windows till I can afford to buy a new license?