If you have the copy installed on your device, follow the following instructions after purchasing the code for the desired copy:
Activation method: Click the Start button, then Settings > Update & Security > Activation > Change product key.
If you want to install the copy from scratch, follow the following instructions:
- Download the Windows 10 installation tool from the official Microsoft website by clicking here.
- Follow the instructions to install Windows 10 and choose whether to upgrade your current system copy or install it to a flash drive or hard drive.
- Enter the code received in the box provided during installation.
- Wait for the installation to complete and the process to be successful.