You can upgrade Windows 7 to Windows 10 free of charge only if the current version of the system is a license and not a corporate. Also the option to install Windows 10 features users OS 8 and 8.1. If your computer meets all the necessary requirements, check to see if a system tray (the area on the taskbar next to the clock) the icon "Update to Windows 10", clicking on which starts the installation process.
In the absence of the icon, make sure that your computer is turned on automatic search for updates. Go to the Windows update through the control panel. Be sure to install all available Addons for the current version of OS, otherwise you will not be granted access to the application installing Windows 10. Don't forget to connect your computer to the Internet.
You will receive a free upgrade from Windows 7 to Windows 10 after the reserve turn to receive the new operating system. After clicking on the icon located on the taskbar, you will need to enter your email address. Next, you will receive notification as to whether a free upgrade at the moment.
The installation of Windows 10 will be available immediately, but only after it comes your turn. This is done in order to avoid excessive load on the Microsoft servers. The readiness to start installing Windows 10, you know by e-mail or as an icon on the taskbar. To start the update immediately or at another convenient time. Wait until the upgrade process from Windows 7 to Windows 10. The installation runs in the background without affecting the active programs and services. After its completion the computer should be rebooted.
If your system is not suitable for updating is likely to install Windows 10 for free will not work. The only solution is to wait for the release of new computers and laptops on which the system will be installed initially. You can also visit the official Microsoft website to get help on existing issues and problems related to the update.