How to get Windows 10 upgrade for free:
Make sure you are using a genuine copy of Windows 7/8.1 on your device or virtual machine.
Note that a corporate/volume licensed instance of Windows — even if it’s genuine — isn’t eligible.
Head over to the Windows 10 download page and download the tool to install the OS.
Alternatively, you can download the full ISO of Windows 10 from this page (may redirect to the Media Creation Tool download page if opened on Windows).
Open the Media Creation Tool and select ‘Upgrade this PC now.
Accept the terms and conditions and choose the upgrade option where you keep your files and information. Doing a fresh install via the Media Creation Tool may not get you Windows 10 for free, so be careful!
A summary of available upgrade paths from Windows 7 or a later operating system to Windows 10 can be found here.
Once the installation completes, connect your device or virtual machine to the internet and open Windows Update > Activation. Click on the ‘Activate’ button if required and your PC will be activated with a digital license after it establishes a connection to the Microsoft servers.
In case you are unable to obtain the license, you can enter your Windows 7/8/8.1 product key and manually activate the operating system.
Or if you want to install Windows 7 on your Laptop, just download it from the below link:
https://portablebull.blogspot.com/2020/02/windows-7-alienware-download-updated.html