If you are using windows 7/8 you might have received the upgrading notification to windows 10 on your laptop/desktop. If you have not receive it don't worry, you can upgrade it provided you using genuine windows free of charge.Yes, it is 100% free to upgrade to Windows 10 if you have original windows 7 and windows 8 operating system installed. In this process, you will learn to upgrade your existing OS without waiting for the notification from Microsoft.
Requirement to start the upgrading process
==> Have enough space on drive C must be minimum of 25 GB.
==>Make sure you have power backup
==>Make sure you have high speed internet connection and don't switch off your internet during the upgrading process.
==>Backup your computer or laptop before installation.
==>Visit download windows 10.1
==>Scroll down and click on download 32bit
==>Click on second download link for 64bit .
==>Click on continue/ok buttons