Windows 10: How to find Windows Product Key which already came installed in device?

I wanted to know my windows key but and I dont how to, is there any method from which I can find the key in the Windows itself?

:)

 

Windows Product Key

A friend of mine has an all-in-one that came with Windows 8 pre-installed. He erased the original OS thinking he could install another version of Windows 8. One thing he encountered, that he didn't expect, the BIOS/UEFI has a password. So, basically he is locked out from installing another OS. His BIOS has the product key nestled inside. Is it possible to find out which version the product key belong to?

 

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

 

Window 10 installation and activation using Windows 7 Product key

Hello Sourabh,

Thank you for contacting Microsoft Community.

Starting with the November update, Windows 10 (Version 1511) can be activated using some Windows 7,
Windows 8, and Windows 8.1 product keys. During the free upgrade or installation, you can use a valid Windows 7,
Windows 8, or Windows 8.1 product key to activate
Windows 10 (Version 1511 or higher). The following types of product keys are supported:

• 
  Product keys included in the packaging or the Certificate of Authenticity (COA) attached to your PC that came installed with Windows.
  
• 
  Product keys included in the confirmation email you received after buying Windows from an online retailer.
  
• 
  Product keys included in the box the Windows DVD came in.
  
• 
  Product keys you bought using Windows Anytime Upgrade or Get Genuine Windows.
  
• 
  If you bought a Windows 8.1 Pro Pack product key, you can use it to activate
  Windows 10 Pro.
  

After Windows 10 is activated, a digital entitlement will be given to your device based on the product key you entered. This means that you’ll no longer need to enter a product key to activate
Windows 10 on this device.

On some devices that came pre-installed with Windows 8 or Windows 8.1, the product key is provisioned in the device firmware. On these devices the product key will be verified during setup, and then the appropriate edition of
Windows 10 will be installed.

Note:

• 
  Some Windows 7, Windows 8, and Windows 8.1product keys can't be used to activate
  Windows 10, such as product keys for volume licensing, including Generic Volume Licensing Keys (GVLK) and Multiple Activation Keys (MAK), and Windows 7 Enterprise,
  Windows 8 Enterprise, and Windows 8.1 Enterprise.
  

Keep us posted if you require further assistance.