If you running Windows 10 Home:
1. Restart the machine
2. Disconnect from the internet
3. Change the activation key with the upgrade key: VK7JG-NPHTM-C97JM-9MPGT-3V66T (do not connect to the internet)
4. After the upgrade is complete, connect to the internet again and enter your activation key for Windows 10 Pro
IF YOU DON'T HAVE INSTALLED WINDOWS 10 Professional ON YOUR COMPUTER:
1. You have to download Media Creation Tool
For Media Creation Tool CLICK HERE
After that:
1. Run the media creation tool.
2. Select Create installation media for another PC.
3. Select the language, edition and architecture (64-bit or 32-bit) for Windows 10.
4. Follow the steps to create the installation media, then select Finish when it’s done.
5. When you’re ready to perform a clean installation, turn on your PC, insert the DVD or USB flash drive you created, then shut down your PC.
6. Restart your PC, then press any key to boot from the DVD or USB flash drive.
If you restart your PC and your current version of Windows starts, you might have to open a boot menu or change the boot order in your PC’s BIOS or UEFI settings so that your PC boots from the media.
To open a boot menu or change the boot order, you’ll typically need to press a combination of keys (such as F2, F12, Delete or Esc) immediately after you turn on your PC.
For instructions on changing the boot order for your PC, check the documentation that came with your PC or goes to the manufacturer’s website.
If changing the boot menu or order doesn’t work, try again by signing in to Windows, shutting down, then starting your PC.
7. On the Install Windows page, enter your language and other preferences, then select Next.
8. Select Install Windows.
9. On the Enter the product key to activate Windows page, enter your product key.
10. On the Licence terms page, if you accept the license terms, select I accept the license terms, then select Next.
11. On the Which type of installation do you want? page, select Custom.
12. On the Where do you want to install Windows? page, select the partition that you want, select the formatting option that you want to perform (if needed), then follow the instructions.
13. When you’ve finished formatting, select Next.
14. Follow the rest of the setup instructions to finish installing Windows.