Buy a Genuine Microsoft Windows 10 Key
Click the start button --> then click Settings --> then click Update & Security --> then click Windows Update --> click check for updates and also download and install.
Please restart your machine and check a few more times and update every Windows feature and then restart your machine and apply the key.
- Visit: https://www.microsoft.com/en-us/software-download/windows10
- Click “Update Now” and it will download/save a file name "Windows10Upgrade9252.exe"
- Double click / run the “Windows10Upgrade9252.exe”
- Follow the prompt to finalize the upgrade and restart your machine if necessary
- Apply the Activation key
- To Activate: Start - Setting - Update & Security - Activation - Change Product Key
IMPORTANT: if the upgrade key gives any error then please turn on the internet back again and apply the Activation key
- Switch off the internet connection ( VERY IMPORTANT !)
- Click Start --> Setting --> Update & Security --> Activation --> Change Product Key and follow the prompt (Apply the Upgrade Key). You should have received this key with your purchase
- Turn on the internet back again
- Now apply the Activation key (Click Start --> Setting --> Update & Security --> Activation --> Change Product Key)
Now Activate your Windows 10
To Activate: Start - Setting - Update & Security - Activation - Change Product Key
Buy Genuine Microsoft Windows 10 Key
If the problem still persists then please also do a fresh installation by creating a bootable USB from this below Microsoft link.