Microsoft has offered Windows 10 for free to Windows 7 and Windows 8 users for entire one year from its date of launching the software.
Microsoft has also offered to Fully Support Windows 10 for a life cycle of the device weather it is Laptop, PC, or Phone, a first ever offer by Microsoft to its clients. Previously, Microsoft was giving only limited OS support to its clients.
Click Here to Upgrade to Microsoft 10 if you are already using Windows 7 or Windows 8 with a valid Microsoft license.
Click the link below to upgrade from Microsoft site directly.